9 lines
2.2 KiB
Text
9 lines
2.2 KiB
Text
(phixonline)-->
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<span style="color: #008080;">include</span> <span style="color: #000000;">sets</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
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<span style="color: #004080;">sequence</span> <span style="color: #000000;">a</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"John"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Serena"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Bob"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Mary"</span><span style="color: #0000FF;">},</span>
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<span style="color: #000000;">b</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"Jim"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Mary"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"John"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Bob"</span><span style="color: #0000FF;">}</span>
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<span style="color: #0000FF;">?</span><span style="color: #000000;">difference</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">,</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)</span>
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<span style="color: #0000FF;">?</span><span style="color: #000000;">difference</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">,</span><span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
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<span style="color: #0000FF;">?</span><span style="color: #000000;">difference</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">,</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)</span>
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<span style="color: #0000FF;">?</span><span style="color: #000000;">difference</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">,</span><span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
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