Hill sorting is an improved version of direct insertion sorting, and it is also a kind of insertion sorting. The improvement is to set a step size for each traversal and then perform direct insertion sorting. After completing a traversal, the step size is halved until the step size is less than or equal to 1.
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Since each move will move a step distance, direct insertion sort only moves one step each time, so Hill sorting is more efficient than direct insertion sorting.
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Algorithm implementation:
public static void shellSort(int[] array) {
int step = array.length;
while (true) {
step /= 2;
for (int i = 0; i < step; i++) {
for (int j = i + step; j < array.length; j += step) {
int tmp = array[j];
int k = j;
while (k >=step && array[k - step] > tmp) {//将大于tmp的数往后移
array[k] = array[k - step];
k-=step;
}
array[k] = tmp;//插入
}
}
if (step <= 1)
return;
}
}The above is the detailed content of Implementation of Hill sorting algorithm. For more information, please follow other related articles on the PHP Chinese website!
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