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POjava: while loop - statement with a semicolon before going into statements between curly braces?
 

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  1. POjava: while loop - statement with a semicolon before going into statements between curly braces?
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    <p>I was looking at another page here on stackoverflow and came across a working implementation of cycle sort, but I don't understand how a statement with a semicolon can exist before the curly braces in a while loop. I thought that the while loop is supposed to completely terminate and take no further actions once it finds a statement with a semicolon, so how is it that the code within the curly braces is getting executed? At first glance, I would interpret this as "var" gets incremented with each iteration of the while loop - but I know this is not the case because removing it from that spot and putting the "var++" inside of the curly braces causes an infinite loop. </p> <p>Under exactly which condition is "var" incremented? Either an explanation, or a link that explains similar syntax:</p> <pre><code>while (checkSomeBool) var++; { //other stuff happening in here } </code></pre> <p>would be appreciated. Thank you. Below is the code taken from <a href="https://stackoverflow.com/questions/3623509/how-to-sort-an-array-using-minimum-number-of-writes">CycleSort</a></p> <pre><code>public static final &lt;T extends Comparable&lt;T&gt;&gt; int cycleSort(final T[] array) { int writes = 0; // Loop through the array to find cycles to rotate. for (int cycleStart = 0; cycleStart &lt; array.length - 1; cycleStart++) { T item = array[cycleStart]; // Find where to put the item. int pos = cycleStart; for (int i = cycleStart + 1; i &lt; array.length; i++) if (array[i].compareTo(item) &lt; 0) pos++; // If the item is already there, this is not a cycle. if (pos == cycleStart) continue; // Otherwise, put the item there or right after any duplicates. &lt;while (item.equals(array[pos])) pos++; { final T temp = array[pos]; array[pos] = item; item = temp; } writes++; // Rotate the rest of the cycle. while (pos != cycleStart) { // Find where to put the item. pos = cycleStart; for (int i = cycleStart + 1; i &lt; array.length; i++) if (array[i].compareTo(item) &lt; 0) pos++; // Put the item there or right after any duplicates. while (item.equals(array[pos])) pos++; { final T temp = array[pos]; array[pos] = item; item = temp; } writes++; } } return writes; </code></pre> <p>}</p>
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    1. USKrondorian
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    1. COIt may help to read it like this: `while (checkSomeBool) { var++; } { // other stuff }`
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      1. POjava: while loop - statement with a semicolon before going into statements between curly braces?
      1. USPeter C
    2. COIt is definitely screwy code (though nowhere near the screwiest I've ever seen).
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      1. POjava: while loop - statement with a semicolon before going into statements between curly braces?
      1. USHot Licks
    3. COI agree with Hot Licks. I think that the author was trying to be misleading.
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      1. POjava: while loop - statement with a semicolon before going into statements between curly braces?
      1. USStephen C
 

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