插入排序之折半插入排序（java實現）

import java.util.Arrays;

public class BinaryInsertSort {

    public static void binaryInsertSort(DataWraper[] data){
        System.out.println("開始排序：");
        int arrayLength=data.length;
        for(int i=1;i<arrayLength;i++){
            DataWraper tmp=data[i];
            int low=0;
            int high=i-1;
            while(low<=high){
                //找出low、high的中間索引
                int mid=(low+high)/2;
                //如果tmp值大於low、high中間元素的值
                if(tmp.compareTo(data[mid])>0){
                    //限制在索引大於mid的那一半中搜尋
                    low=mid+1;
                }else{
                    //限制在索引小於mid的那一半中搜尋
                    high=mid-1;
                }
            }
            //將low到i處的所有元素向後整體移動一位
            for(int j=i;j>low;j--){
                data[j]=data[j-1];
            }
            data[low]=tmp;
            System.out.println(Arrays.toString(data));
        }
    }
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        DataWraper [] data={
                new DataWraper(21, ""),
                new DataWraper(30, ""),
                new DataWraper(49, ""),
                new DataWraper(30, "*"),
                new DataWraper(16, ""),
                new DataWraper(9, ""),
               
        };
        System.out.println("排序之前：\n"+Arrays.toString(data));
        binaryInsertSort(data);
        System.out.println("排序之後：\n"+Arrays.toString(data));
    }

}

結果：

排序之前：
[21, 30, 49, 30*, 16, 9]
開始排序：
[21, 30, 49, 30*, 16, 9]
[21, 30, 49, 30*, 16, 9]
[21, 30*, 30, 49, 16, 9]
[16, 21, 30*, 30, 49, 9]
[9, 16, 21, 30*, 30, 49]
排序之後：
[9, 16, 21, 30*, 30, 49]