直接插入排序(java版本)
import java.util.Arrays;
public class StraightInsertionSort {
public static void main(String[] args) {
int[] a = new int[]{3, 4, 2, 7, 9, 1};
for (int i = 1; i < a.length; i++) {
int tmp = a[i];
int j = i - 1;
for (; j >= 0 && a[j] < tmp ; j--)
a[j + 1] = a[j];
a[j + 1] = tmp;
}
System.out.println(Arrays.toString(a));
}
}
注意点:内部循环不要忘记加上j>=0