希尔排序(又称缩小增量排序，增量递减排序，ShellSort）的一个JavaScript实现
<html> <script type="text/javascript"> function shellSort(array) { function swap(array, i, k) { var temp = array[i]; array[i] = array[k]; array[k] = temp; } var length = array.length, gap = Math.floor(length / 2); while (gap > 0) { console.log("Current gap changed to be: " + gap); for (var i = gap; i < length; i++) { console.log( "in current loop, i = " + i + " gap: " + gap); for (var j = i; 0 < j; j -= gap) { console.log("in current loop, gap is fixed as: " + gap + " current j: " + j); var left = j - gap; console.log(" trying to evaluate left: " + left + " right: " + j); var abapLeft = left + 1; var abapRight = j + 1; console.log(" the corresponding ABAP index, LEFT: " + abapLeft + " RIGHT: " + abapRight); console.log(" array[left]: " + array[left] + " array[right]: " + array[j]); if (array[j - gap] > array[j]) { swap(array, j - gap, j); } else { break; } } } gap = Math.floor(gap / 2); } return array; } var input = [9,4,1,2,3,4,5]; var result = shellSort(input); debugger; </script> </html>
