<snapdata remixID="9232038"><project name="U5L1-Button Factory" app="Snap! 5.4, http://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" penlog="false" volume="100" pan="0" lines="round" ternary="true" codify="false" inheritance="false" sublistIDs="false" scheduled="false" id="1"><pentrails>data:image/png;base64,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</pentrails><costumes><list struct="atomic" id="2"></list></costumes><sounds><list struct="atomic" id="3"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites><sprite name="Sprite" idx="1" x="1.7085817921840771" y="-0.6403808282644263" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="80,80,80,1" pen="tip" id="8"><costumes><list struct="atomic" id="9"></list></costumes><sounds><list struct="atomic" id="10"></list></sounds><blocks></blocks><variables></variables><scripts><script x="27.441021641025657" y="10"><custom-block s="Number guessing game"><comment w="547" collapsed="false">GUESSING THE COMPUTERS NUMBER&#xD;&#xD;What we really don&apos;t want to do is guess linearly.  That is, we don&apos;t want to do something like guessing 1 then 2 then 3 etc. until the solution is found.  If we are trying to find a number between 1 and 1,000,000, it might take 1,000,000 guesses to find the solution!&#xD;&#xD;It is better to guess in the middle.  If we are trying to guess a number between 1 and 1,000,000, so a good first guess is 500,000.  If the solution is higher, then we can ignore all of the numbers that are less than 500,000.  If it is lower, then we can ignore all of the numbers greater than 500,000.  (If we&apos;re lucky, the solution will be 500,000, but we&apos;ll assume that we aren&apos;t lucky.)  By guessing in the middle, we eliminate half of the possible solutions at every step.&#xD;&#xD;This strategy is called a &quot;binary chop&quot;.  Using this strategy, the solution will be found in at most log2(n) where n is the number of possible solutions.  log2(1,000,000) is just under 20, so the maximum number of guesses we need to find the solution using this strategy will be 20.  That&apos;s a lot better than 1,000,000 guesses in the worst case and 500,000 guesses in an average case.</comment></custom-block></script><comment x="30.80000000000001" y="120.99999999999989" w="106" collapsed="true">5.1.1.1 and 5.1.1.2</comment><script x="54.000001" y="221.00000099999988"><block s="reportNewList"><list><l>1</l><l>7</l><l>8</l><l>9</l><l>11</l><l>12</l><l>21</l><l>22</l><l>23</l><l>24</l><l>73</l><l>73</l><l>96</l><l>99</l></list></block></script><script x="61" y="336.9999999999999"><block s="doSetVar"><l>awful list</l><block s="reportNewList"><list><l>1</l><l>7</l><l>8</l><l>9</l><l>11</l><l>12</l><l>21</l><l>22</l><l>23</l><l>24</l><l>73</l><l>73</l><l>96</l><l>99</l></list></block></block><custom-block s="Say position of number %n in sorted list %l"><l>11</l><block var="awful list"/></custom-block></script><script x="61" y="414"><block s="doSetVar"><l>awful list</l><block s="reportNewList"><list><l>1</l><l>7</l><l>8</l><l>9</l><l>11</l><l>12</l><l>21</l><l>22</l><l>23</l><l>24</l><l>73</l><l>73</l><l>96</l><l>99</l></list></block></block><custom-block s="Say position of number %n in sorted list %l"><l>2</l><l/></custom-block></script></scripts></sprite><sprite name="Sprite(2)" idx="2" x="-174.86075949367068" y="107.15189873417725" heading="58" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="89.96400000000001,160.65,0,1" pen="tip" id="78"><costumes><list struct="atomic" id="79"></list></costumes><sounds><list struct="atomic" id="80"></list></sounds><blocks></blocks><variables></variables><scripts></scripts></sprite><watcher var="number of guesses" style="normal" x="0.8204611319083597" y="0.8204611319083313" color="243,118,29" hidden="true"/><watcher var="feedback for computer" style="normal" x="8.229166666666742" y="8.2291666666667" color="243,118,29" hidden="true"/><watcher var="awful list" style="normal" x="160" y="0" color="243,118,29" extX="80" extY="70"/></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="show buttons" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doBroadcast"><l>show</l></block></script></block-definition><block-definition s="hide buttons" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doBroadcast"><l>hide</l></block></script></block-definition><block-definition s="position of %&apos;value&apos; in unsorted list %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%l"></input></inputs><script><custom-block s="for %upvar = %n to %n %cs"><l>i</l><l>1</l><block s="reportListLength"><block var="data"/></block><script><block s="doIf"><block s="reportEquals"><block s="reportListItem"><block var="i"/><block var="data"/></block><block var="value"/></block><script><block s="doReport"><block var="i"/></block></script></block></script></custom-block><block s="doReport"><l>Not In List</l></block></script><scripts><comment x="10" y="176.79999999999998" w="276.6666666666667" collapsed="false">This will be the most common student solution.  There are many other ways it could be done.  For example, here&apos;s a recursive solution:</comment><script x="13.666666666666666" y="247.1333333333333"><block s="doIf"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doReport"><l>Not In List</l><comment w="259.3333333333333" collapsed="false">This won&apos;t actually quite work, because outer calls to POSITION OF will try to add 1 to this non-number, so the ultimate reported value will be &quot;NaN&quot;. It&apos;s fixable but too much trouble at this point when we&apos;re not really studying recursive functions.  NaN isn&apos;t such a bad report anyway.</comment></block></script><comment w="185.33333333333334" collapsed="true">EMPTY? is in  the Tools library.</comment></block><block s="doIf"><block s="reportEquals"><block s="reportListItem"><l>1</l><block var="data"/></block><block var="value"/></block><script><block s="doReport"><l>1</l></block></script></block><block s="doReport"><block s="reportSum"><custom-block s="position of %n in unsorted list %l"><block var="value"/><block s="reportCDR"><block var="data"/></block></custom-block><l>1</l></block></block></script><comment x="13.999999999999996" y="406.6000000000001" w="390.6666666666667" collapsed="false">The last line says that the position of VALUE is one more than its position in the list without its first item.  For example, if the DATA list is {3,4,5,6} and we want to know the position of 5, first find its position in {4,5,6} (namely, 2) and add 1 to get 3, which is the position of 5 in {3,4,5,6}.</comment></scripts></block-definition><block-definition s="Say position of number %&apos;num&apos; in sorted list %&apos;data&apos;" type="command" category="looks"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%l"></input></inputs><script><block s="doDeclareVariables"><list><l>guess</l><l>low</l><l>high</l><l># of guesses</l></list></block><block s="doSetVar"><l># of guesses</l><l>0</l></block><block s="doSetVar"><l>low</l><l>1</l></block><block s="doSetVar"><l>high</l><block s="reportListLength"><block var="data"/></block></block><block s="doSetVar"><l>guess</l><block s="reportRound"><block s="reportQuotient"><block s="reportSum"><block var="low"/><block var="high"/></block><l>2</l></block></block></block><block s="doUntil"><block s="reportEquals"><block s="reportListItem"><block var="guess"/><block var="data"/></block><block var="num"/></block><script><block s="doIf"><block s="reportGreaterThan"><block var="low"/><block var="high"/></block><script><block s="doSayFor"><l>Not in list (or list isn&apos;t sorted).</l><l>3</l></block><block s="doStopThis"><l><option>this block</option></l></block></script></block><block s="doIfElse"><block s="reportGreaterThan"><block s="reportListItem"><block var="guess"/><block var="data"/></block><block var="num"/></block><script><block s="doSetVar"><l>high</l><block s="reportDifference"><block var="guess"/><l>1</l></block></block></script><script><block s="doSetVar"><l>low</l><block s="reportSum"><block var="guess"/><l>1</l></block></block></script></block><block s="doChangeVar"><l>number of guesses</l><l>1</l></block><block s="doSetVar"><l>guess</l><block s="reportRound"><block s="reportQuotient"><block s="reportSum"><block var="low"/><block var="high"/></block><l>2</l></block></block></block></script></block><block s="doSayFor"><block s="reportJoinWords"><list><block var="guess"/><l> found in </l><block var="number of guesses"/></list></block><l>4</l></block></script><scripts><comment x="10" y="543.1333333333331" w="462" collapsed="false">This is essentially the game program, but with the user interface parts removed.&#xD;&#xD;I also replaced the FOREVER loop with a REPEAT UNTIL.  I think FOREVER is okay for games, but in a serious program the stopping condition for the loop should be self-documenting.  (There&apos;s still an early stop if the error condition LOW&gt;HIGH occurs.  In this case it means that the supposedly sorted list given as input isn&apos;t sorted, or if the desired item isn&apos;t in the list.)</comment></scripts></block-definition><block-definition s="position of %&apos;num&apos; in sorted list %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%l"></input></inputs><script><block s="doDeclareVariables"><list><l>guess</l><l>low</l><l>high</l></list></block><block s="doSetVar"><l>low</l><l>1</l></block><block s="doSetVar"><l>high</l><block s="reportListLength"><block var="data"/></block></block><block s="doSetVar"><l>guess</l><block s="reportRound"><block s="reportQuotient"><block s="reportSum"><block var="low"/><block var="high"/></block><l>2</l></block></block></block><block s="doUntil"><block s="reportEquals"><block s="reportListItem"><block var="guess"/><block var="data"/></block><block var="num"/></block><script><block s="doIf"><block s="reportGreaterThan"><block var="low"/><block var="high"/></block><script><block s="doReport"><l>0</l><comment w="124.00000000000003" collapsed="false">This is what the problem says to do if the number isn&apos;t found in the list.  Personally I&apos;d report FALSE.  :-)</comment></block></script></block><block s="doIfElse"><block s="reportGreaterThan"><block s="reportListItem"><block var="guess"/><block var="data"/></block><block var="num"/></block><script><block s="doSetVar"><l>high</l><block s="reportDifference"><block var="guess"/><l>1</l></block></block></script><script><block s="doSetVar"><l>low</l><block s="reportSum"><block var="guess"/><l>1</l></block></block></script></block><block s="doSetVar"><l>guess</l><block s="reportRound"><block s="reportQuotient"><block s="reportSum"><block var="low"/><block var="high"/></block><l>2</l></block></block></block></script></block><block s="doReport"><block var="guess"/></block></script><scripts><comment x="6.666666666666667" y="422.80000000000007" w="435.3333333333332" collapsed="true">This is exactly the code from the previous problem, but with REPORT instead of SAY.</comment></scripts></block-definition><block-definition s="label %&apos;text&apos; of size %&apos;size&apos;" type="command" category="pen"><comment x="0" y="0" w="90" collapsed="false">LABEL will stamp text on the stage at the given font size. The direction of the text is the direction the sprite is facing, and color will match the pen color.</comment><header></header><code></code><translations></translations><inputs><input type="%txt">Hello!</input><input type="%n">12</input></inputs><script><block s="doRun"><block s="reportJSFunction"><list><l>text</l><l>size</l></list><l>var stage = this.parentThatIsA(StageMorph),&#xD;    context = stage.penTrails().getContext(&apos;2d&apos;),&#xD;    rotation = radians(this.direction() - 90),&#xD;    trans = new Point(&#xD;      this.center().x - stage.left(),&#xD;      this.center().y - stage.top()&#xD;    ),&#xD;    isWarped = this.Warped,&#xD;    len,&#xD;    pos;&#xD;&#xD;if (isWarped) {endWarp(); }&#xD;context.save();&#xD;context.font = size + &apos;px monospace&apos;;&#xD;context.textAlign = &apos;left&apos;;&#xD;context.textBaseline = &apos;alphabetic&apos;;&#xD;context.fillStyle = this.color.toString();&#xD;len = context.measureText(text).width;&#xD;trans = trans.multiplyBy(1 / stage.scale);&#xD;context.translate(trans.x, trans.y);&#xD;context.rotate(rotation);&#xD;context.fillText(text, 0, 0);&#xD;context.translate(-trans.x, -trans.y);&#xD;context.restore();&#xD;pos = new Point(&#xD;  len * Math.sin(radians(this.direction())),&#xD;  len * Math.cos(radians(this.direction())));&#xD;pos = pos.add(new Point(this.xPosition(), this.yPosition()));&#xD;this.gotoXY(pos.x, pos.y, false);&#xD;this.changed();&#xD;if (isWarped) {this.startWarp(); }&#xD;stage.changed();</l></block><list><block var="text"/><block var="size"/></list></block></script></block-definition><block-definition s="map %&apos;function&apos; over %&apos;lists&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%repRing"></input><input type="%mult%l"></input></inputs><script><block s="doWarp"><script><block s="doDeclareVariables"><list><l>mapone</l><l>mapmany</l></list></block><block s="doSetVar"><l>mapone</l><block s="reifyScript"><script><block s="doIf"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doReport"><block s="reportCONS"><block s="evaluate"><block var="function"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><block s="evaluate"><block var="mapone"/><list><block s="reportCDR"><block var="data"/></block></list></block></block></block></script><list><l>data</l></list></block></block><block s="doSetVar"><l>mapmany</l><block s="reifyScript"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportListItem"><l>1</l><block var="data lists"/></block></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doReport"><block s="reportCONS"><block s="evaluate"><block var="function"/><custom-block s="map %repRing over %mult%l"><block s="reifyReporter"><autolambda><block s="reportListItem"><l>1</l><l/></block></autolambda><list></list></block><list><block var="data lists"/></list></custom-block></block><block s="evaluate"><block var="mapmany"/><list><custom-block s="map %repRing over %mult%l"><block s="reifyReporter"><autolambda><block s="reportCDR"><l/></block></autolambda><list></list></block><list><block var="data lists"/></list></custom-block></list></block></block></block></script><list><l>data lists</l></list></block></block><block s="doIfElse"><custom-block s="empty? %l"><block s="reportCDR"><block var="lists"/></block></custom-block><script><block s="doReport"><block s="evaluate"><block var="mapone"/><list><block s="reportListItem"><l>1</l><block var="lists"/></block></list></block></block></script><script><block s="doReport"><block s="evaluate"><block var="mapmany"/><list><block var="lists"/></list></block></block></script></block></script></block></script></block-definition><block-definition s="empty? %&apos;data&apos;" type="predicate" category="lists"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportEquals"><block var="data"/><block s="reportNewList"><list></list></block></block></block></script></block-definition><block-definition s="keep items such that %&apos;pred&apos; from %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%predRing"></input><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doIfElse"><block s="evaluate"><block var="pred"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><script><block s="doReport"><block s="reportCONS"><block s="reportListItem"><l>1</l><block var="data"/></block><custom-block s="keep items such that %predRing from %l"><block var="pred"/><block s="reportCDR"><block var="data"/></block></custom-block></block></block></script><script><block s="doReport"><custom-block s="keep items such that %predRing from %l"><block var="pred"/><block s="reportCDR"><block var="data"/></block></custom-block></block></script></block></script></block></script></block-definition><block-definition s="combine with %&apos;function&apos; items of %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%repRing"></input><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportCDR"><block var="data"/></block></custom-block><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="data"/></block></block></script></block><block s="doReport"><block s="evaluate"><block var="function"/><list><block s="reportListItem"><l>1</l><block var="data"/></block><custom-block s="combine with %repRing items of %l"><block var="function"/><block s="reportCDR"><block var="data"/></block></custom-block></list></block></block></script></block></script></block-definition><block-definition s="if %&apos;test&apos; then %&apos;true&apos; else %&apos;false&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%b"></input><input type="%anyUE"></input><input type="%anyUE"></input></inputs><script><block s="doIfElse"><block var="test"/><script><block s="doReport"><block s="evaluate"><block var="true"/><list></list></block></block></script><script><block s="doReport"><block s="evaluate"><block var="false"/><list></list></block></block></script></block></script></block-definition><block-definition s="for %&apos;i&apos; = %&apos;start&apos; to %&apos;end&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%n">1</input><input type="%n">10</input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>step</l><l>tester</l></list></block><block s="doIfElse"><block s="reportGreaterThan"><block var="start"/><block var="end"/></block><script><block s="doSetVar"><l>step</l><l>-1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportLessThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script><script><block s="doSetVar"><l>step</l><l>1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportGreaterThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script></block><block s="doSetVar"><l>i</l><block var="start"/></block><block s="doUntil"><block s="evaluate"><block var="tester"/><list></list></block><script><block s="doRun"><block var="action"/><list></list></block><block s="doChangeVar"><l>i</l><block var="step"/></block></script></block></script></block-definition><block-definition s="join words %&apos;words&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%mult%txt"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportCDR"><block var="words"/></block></custom-block><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="words"/></block></block></script></block><block s="doIf"><block s="reportEquals"><l></l><block s="reportListItem"><l>1</l><block var="words"/></block></block><script><block s="doReport"><custom-block s="join words %mult%txt"><block s="reportCDR"><block var="words"/></block></custom-block></block></script></block><block s="doIf"><block s="reportEquals"><l></l><block s="reportListItem"><l>2</l><block var="words"/></block></block><script><block s="doReport"><custom-block s="join words %mult%txt"><block s="reportCONS"><block s="reportListItem"><l>1</l><block var="words"/></block><block s="reportCDR"><block s="reportCDR"><block var="words"/></block></block></block></custom-block></block></script></block><block s="doReport"><block s="reportJoinWords"><list><block s="reportListItem"><l>1</l><block var="words"/></block><l> </l><custom-block s="join words %mult%txt"><block s="reportCDR"><block var="words"/></block></custom-block></list></block></block></script></block></script><scripts><script x="229.00000300000002" y="196.77778077777774"><block s="reportJoinWords"><list><l></l><l></l></list></block></script></scripts></block-definition><block-definition s="list $arrowRight sentence %&apos;data&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doReport"><custom-block s="join words %mult%txt"><block var="data"/></custom-block></block></script></block></script></block-definition><block-definition s="sentence $arrowRight list %&apos;text&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%txt"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportTextSplit"><block var="text"/><l><option>whitespace</option></l></block></block></script></block></script></block-definition><block-definition s="catch %&apos;tag&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%cs"></input></inputs><script><block s="doCallCC"><block s="reifyScript"><script><block s="doSetVar"><l>tag</l><block var="cont"/></block><block s="doRun"><block var="action"/><list></list></block></script><list><l>cont</l></list></block></block></script></block-definition><block-definition s="throw %&apos;cont&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">catchtag</input></inputs><script><block s="doRun"><block var="cont"/><list></list></block></script></block-definition><block-definition s="catch %&apos;tag&apos; %&apos;value&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%anyUE"></input></inputs><script><block s="doCallCC"><block s="reifyScript"><script><block s="doSetVar"><l>tag</l><block var="cont"/></block><block s="doReport"><block s="evaluate"><block var="value"/><list></list></block></block></script><list><l>cont</l></list></block></block></script></block-definition><block-definition s="throw %&apos;tag&apos; %&apos;value&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">catchtag</input><input type="%s"></input></inputs><script><block s="doRun"><block var="tag"/><list><block var="value"/></list></block></script></block-definition><block-definition s="for each %&apos;item&apos; of %&apos;data&apos; %&apos;action&apos;" type="command" category="lists"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%l"></input><input type="%cs"></input></inputs><script><block s="doUntil"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doSetVar"><l>item</l><block s="reportListItem"><l>1</l><block var="data"/></block></block><block s="doRun"><block var="action"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><block s="doSetVar"><l>data</l><block s="reportCDR"><block var="data"/></block></block></script></block></script></block-definition><block-definition s="if %&apos;test&apos; do %&apos;action&apos; and pause all $pause-1-255-220-0" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%boolUE"></input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>breakpoint</l></list></block><block s="doIf"><block s="evaluate"><block var="test"/><list></list></block><script><block s="doSetVar"><l>breakpoint</l><block var="test"/></block><block s="doShowVar"><l>breakpoint</l></block><block s="doRun"><block var="action"/><list></list></block><block s="doPauseAll"></block><block s="doHideVar"><l></l></block></script></block></script></block-definition><block-definition s="word $arrowRight list %&apos;word&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%txt"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportTextSplit"><block var="word"/><l><option>letter</option></l></block></block></script></block></script></block-definition><block-definition s="ignore %&apos;x&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs></block-definition><block-definition s="ask %&apos;sprite&apos; for %&apos;expression&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">Sprite</input><input type="%repRing"></input></inputs><script><block s="doReport"><block s="evaluate"><block s="reportAttributeOf"><block var="expression"/><block var="sprite"/></block><list></list></block></block></script></block-definition><block-definition s="list $arrowRight word %&apos;list&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportJoinWords"><block var="list"/></block></block></script></block></script></block-definition><block-definition s="Number guessing game" type="command" category="looks"><header></header><code></code><translations></translations><inputs></inputs><script><custom-block s="tell %s to %cs"><l>Sprite(2)</l><script><block s="bubble"><l>I&apos;m thinking of a number from 1 to 60.</l></block></script></custom-block><block s="doDeclareVariables"><list><l>secret number</l><l>number of guesses</l><l>guesses</l></list></block><block s="doSetVar"><l>secret number</l><block s="reportRandom"><l>1</l><l>60</l></block></block><block s="doSetVar"><l>number of guesses</l><l>0</l></block><block s="doSetVar"><l>guesses</l><block s="reportNewList"><list></list></block></block><block s="doUntil"><block s="reportEquals"><block s="getLastAnswer"></block><block var="secret number"/></block><script><block s="doAsk"><l>Guess my secret number.</l></block><block s="doAddToList"><block s="getLastAnswer"></block><block var="guesses"/></block><block s="doSetVar"><l>number of guesses</l><block s="reportSum"><block var="number of guesses"/><l>1</l></block></block><custom-block s="tell %s to %cs"><l>Sprite(2)</l><script><block s="bubble"><block var="guesses"/></block></script></custom-block><block s="doSayFor"><custom-block s="high or low answer: %n secret number: %n"><block s="getLastAnswer"></block><block var="secret number"/></custom-block><l>2</l></block></script></block><block s="doSayFor"><block s="reportJoinWords"><list><l>You guessed it in </l><block var="number of guesses"/><l> guesses.</l></list></block><l>3</l></block></script></block-definition><block-definition s="high or low answer: %&apos;answer&apos; secret number: %&apos;secret number&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input></inputs><script><block s="doIf"><block s="reportEquals"><block var="answer"/><block var="secret number"/></block><script><block s="doReport"><l>Yay!</l></block></script></block><block s="doIfElse"><block s="reportLessThan"><block var="answer"/><block var="secret number"/></block><script><block s="doReport"><l>too low</l></block></script><script><block s="doReport"><l>too high</l></block></script></block></script></block-definition><block-definition s="tell %&apos;sprite&apos; to %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">Sprite</input><input type="%cs"></input></inputs><script><block s="doRun"><block s="reportAttributeOf"><block var="action"/><block var="sprite"/></block><list></list></block></script></block-definition><block-definition s="Computer guesses my number from %&apos;low&apos; to %&apos;high&apos;" type="command" category="looks"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input></inputs><script><block s="doDeclareVariables"><list><l>solution</l><l>computer&apos;s guess</l><l>lowest possible</l><l>highest possible</l></list></block><block s="doSetVar"><l>lowest possible</l><block var="low"/></block><block s="doSetVar"><l>highest possible</l><block var="high"/></block><block s="doSetVar"><l>feedback for computer</l><l>0</l></block><block s="doUntil"><block s="reportEquals"><block var="feedback for computer"/><l>3</l></block><script><block s="doSetVar"><l>computer&apos;s guess</l><block s="reportMonadic"><l><option>floor</option></l><block s="reportQuotient"><block s="reportSum"><block var="lowest possible"/><block var="highest possible"/></block><l>2</l></block></block><comment w="218" collapsed="false">We want the middle number for our guess, but we need to make sure it is an integer.  The computer is using the binary chop strategy.</comment></block><block s="bubble"><block var="computer&apos;s guess"/></block><block s="doChangeVar"><l>number of guesses</l><l>1</l></block><block s="doWaitUntil"><block s="reportGreaterThan"><block var="feedback for computer"/><l>0</l></block></block><block s="doIfElse"><block s="reportEquals"><block var="feedback for computer"/><l>1</l></block><script><block s="doSetVar"><l>lowest possible</l><block s="reportSum"><block var="computer&apos;s guess"/><l>1</l></block></block><block s="doSetVar"><l>feedback for computer</l><l>0</l></block></script><script><block s="doIf"><block s="reportEquals"><block var="feedback for computer"/><l>2</l><comment w="313" collapsed="false">Guess was too high, update upper bound of possible solutions</comment></block><script><block s="doSetVar"><l>highest possible</l><block s="reportDifference"><block var="computer&apos;s guess"/><l>1</l></block></block><block s="doSetVar"><l>feedback for computer</l><l>0</l></block></script></block></script><comment w="313" collapsed="false">Guess was too low, update lower bound of possible solutions</comment></block></script></block></script></block-definition><block-definition s="awful list" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><l></l></block></script></block-definition></blocks><variables><variable name="number of guesses"><l>16</l></variable><variable name="feedback for computer"><l>0</l></variable><variable name="awful list"><list struct="atomic" id="1087">1,7,8,9,11,12,21,22,23,24,73,73,96,99</list></variable></variables></project><media name="U5L1-Button Factory" app="Snap! 5.4, http://snap.berkeley.edu" version="1"></media></snapdata>