计数排序（Java语言）

 视频讲解地址：【手把手带你写十大排序】9.计数排序（Java语言）_哔哩哔哩_bilibili

代码：

public class CountSort {
    public void sortFucntion(int[] array) {
        int max = Integer.MIN_VALUE;
        for (int i : array) {
            max = Math.max(max, i);
        }
        int[] numCountArray = new int[max + 1];
        for (int i = 0; i < array.length; i++) {
            numCountArray[array[i]]++;
        }
        int arrayIndex = 0;
        for (int i = 0; i < numCountArray.length; i++) {
            for (int j = 0; j < numCountArray[i]; j++) {
                array[arrayIndex++] = i;
            }
        }
    }
}