<snapdata remixID="12980272"><project name="HW 22 Checksum" app="Snap! 9.0, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><scenes select="1"><scene name="HW 22 Checksum"><notes></notes><hidden></hidden><headers></headers><code></code><blocks><block-definition s="Checksum %&apos;list&apos;" type="reporter" category="variables"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doDeclareVariables"><list><l>odd sum</l><l>even sum</l></list></block><block s="doSetVar"><l>odd sum</l><l>0</l></block><block s="doSetVar"><l>even sum</l><l>0</l></block><block s="doFor"><l>i</l><l>1</l><block s="reportListAttribute"><l><option>length</option></l><block var="list"/></block><script><block s="doIfElse"><block s="reportVariadicEquals"><list><block s="reportModulus"><block var="i"/><l>2</l></block><l>0</l></list></block><script><block s="doChangeVar"><l>even sum</l><block s="reportListItem"><block var="i"/><block var="list"/></block></block></script><script><block s="doChangeVar"><l>odd sum</l><block s="reportListItem"><block var="i"/><block var="list"/></block></block></script></block></script></block><block s="doReport"><block s="reportDifference"><l>10</l><block s="reportModulus"><block s="reportVariadicSum"><list><block var="odd sum"/><block s="reportVariadicProduct"><list><l>3</l><block var="even sum"/></list></block></list></block><l>10</l></block></block></block></script></block-definition><block-definition s="CheckSumVerification %&apos;list&apos;" type="predicate" category="variables"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doDeclareVariables"><list><l>isbn</l><l>checksum</l></list></block><block s="doSetVar"><l>isbn</l><block s="reportNewList"><list><l></l><l></l><l></l><l></l><l></l><l></l><l></l><l></l><l></l><l></l><l></l><l></l></list></block></block><block s="doFor"><l>i</l><l>1</l><l>12</l><script><block s="doReplaceInList"><block var="i"/><block var="isbn"/><block s="reportListItem"><block var="i"/><block var="list"/></block></block></script></block><block s="doSetVar"><l>checksum</l><custom-block s="Checksum %s"><block var="isbn"/></custom-block></block><block s="doIfElse"><block s="reportVariadicEquals"><list><block var="checksum"/><block s="reportListItem"><l><option>last</option></l><block var="list"/></block></list></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script><script><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block></script></block-definition></blocks><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="false" hyperops="true" codify="false" inheritance="true" sublistIDs="false" id="136"><pentrails>data:image/png;base64,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</pentrails><costumes><list struct="atomic" id="137"></list></costumes><sounds><list struct="atomic" id="138"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="1"><sprite name="Sprite" idx="1" x="0" y="-2.842170943040401e-14" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="80,80,80,1" pen="tip" id="143"><costumes><list struct="atomic" id="144"></list></costumes><sounds><list struct="atomic" id="145"></list></sounds><blocks></blocks><variables></variables><scripts><script x="10" y="10"><block s="receiveGo"></block><block s="doDeclareVariables"><list><l>isbn-12</l></list></block><block s="doAsk"><l>Give me a 12 digit number for an ISBN</l></block><block s="doSetVar"><l>isbn-12</l><block s="reportTextSplit"><block s="getLastAnswer"></block><l><option>letter</option></l></block></block><block s="doUntil"><block s="reportVariadicEquals"><list><block s="reportListAttribute"><l><option>length</option></l><block var="isbn-12"/></block><l>12</l></list></block><script><block s="doAsk"><l>Try again. Give me a 12 digit number for an ISBN</l></block><block s="doSetVar"><l>isbn-12</l><block s="reportTextSplit"><block s="getLastAnswer"></block><l><option>letter</option></l></block></block></script></block><block s="doSayFor"><block s="reportJoinWords"><list><l>The checksum is </l><custom-block s="Checksum %s"><block var="isbn-12"/></custom-block></list></block><l>2</l></block></script><script x="49" y="277"><block s="receiveKey"><l><option>space</option></l><list></list></block><block s="doDeclareVariables"><list><l>isbn-13</l></list></block><block s="doAsk"><l>Give me an ISBN-13</l></block><block s="doSetVar"><l>isbn-13</l><block s="reportTextSplit"><block s="getLastAnswer"></block><l><option>letter</option></l></block></block><block s="doUntil"><block s="reportVariadicEquals"><list><block s="reportListAttribute"><l><option>length</option></l><block var="isbn-13"/></block><l>13</l></list></block><script><block s="doAsk"><l>Try again. Give me an ISBN-13</l></block><block s="doSetVar"><l>isbn-13</l><block s="reportTextSplit"><block s="getLastAnswer"></block><l><option>letter</option></l></block></block></script></block><block s="doSayFor"><custom-block s="CheckSumVerification %s"><block var="isbn-13"/></custom-block><l>2</l></block></script></scripts></sprite></sprites></stage><variables></variables></scene></scenes></project><media name="HW 22 Checksum" app="Snap! 9.0, https://snap.berkeley.edu" version="2"></media></snapdata>