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<b><font color="#FF0033" face="Arial, Helvetica, sans-serif" size="5">(1) Evaluating Postfix Expression</font>
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<pre><font color="#FF0000" size="4"><b>infix</b></font></pre>
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<pre><font color="#FF0000" size="4"><b> Postfix</b></font></pre>
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<td width="53%" height="155"> <b><font size="4"><i><font face="Arial, Helvetica, sans-serif">2+3*4<br>
</font></i></font></b> <b><font size="4"><i><font face="Arial, Helvetica, sans-serif">a*b+5<br>
(1+2)*7<br>
a*b/c<br>
((a/(b-c+d))*(e-a)*c<br>
a/b-c+d*e-a*c</font></i></font></b></td>
<td width="47%" height="155"> <b><font size="4"><i><font face="Arial, Helvetica, sans-serif">234*+<br>
ab*5+<br>
12+7*<br>
ab*c<br>
abc-d+/ea-*c*<br>
ab/c-de*+ac*-/</font></i></font></b><b><font size="4"><i><font face="Arial, Helvetica, sans-serif"></font></i></font></b></td>
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