插入排序

import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;

/**
 * @author: Small sun shine
 * @Description：
 * @date: 2021/6/20 9:40 上午
 */
@Slf4j
public class IntSort {

    private static int[] source = new int[]{5, 8, 2, 4, 3, 6, 9, 2,2,4,5,6,43,0,87,45};
    private static int totalCount = 0;
    private static int count = 0;

    public static void main(String[] args) {
        System.out.println("原始数组数据：" + JSON.toJSONString(check(source)));
        System.out.println("排序后数据：" + JSON.toJSONString(check(source)));
        System.out.println("总交换次数：" + count);
        System.out.println("总比较次数：" + totalCount);
    }

    public static int[] check(int[] source) {
        //如果数组为null或长度等于1，就直接返回
        if (null == source || source.length == 1) {
            return source;
        }
        //进行插入排序
        int length = source.length;
        for (int i = 1; i < length; i++) {
            int data = source[i];
            int j = i - 1;
            for (; j >= 0; j--) {
                totalCount++;
                if (source[j] > data) {
                    count++;
                    source[j + 1] = source[j];
                } else {
                    break;
                }
            }
            source[j + 1] = data;
            String str = String.format("第%d次排序后的次序为:%s", i, JSON.toJSONString(source));
            System.out.println(str);
        }

        return source;
    }
}