JAVA类排序算法之CMP

素颜马尾好姑娘i 2023-01-10 10:20 112阅读 0赞

### 这里写目录标题 ###

*  题目
 *  分析：
 *  AC代码：

# 题目 #

[题目链接][Link 1].  
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输入：

> 5  
> td1336065617 1336065617 n 13766949653  
> 1336065617 1336065617 nc 137  
> ad1336065617 1336065617 na 111  
> 03360651778 1 9 8  
> 1 1 1 1

输出：

> 1 1 1 1  
> 1336065617 1336065617 nc 137  
> 03360651778 1 9 8  
> ad1336065617 1336065617 na 111  
> td1336065617 1336065617 n 13766949653

# 分析： #

获取每一行数据为一个元组，通过CMP函数排序。

排序方式为预处理CMP：返回值大于0即交换位置

//返回值大于0即交换位置
    	static class mycmp implements Comparator<Node>{ 
    		public int compare(Node A, Node B){ 
    			if (A.s.length() - B.s.length() != 0)
    				return A.s.length() - B.s.length();
    			else
    				return A.s.compareTo(B.s);
    		}
    	}

然后用排序函数调用

Arrays.sort(arr, 0, n, new mycmp());

# AC代码： #

import java.util.*;
    public class Main { 
    	static class mycmp implements Comparator<Node>{ 
    		public int compare(Node A, Node B){ 
    			if (A.s.length() - B.s.length() != 0)
    				return A.s.length() - B.s.length();
    			else
    				return A.s.compareTo(B.s);
    		}
    	}
    
    	public static void main(String[] args) { 
    		Scanner sc = new Scanner(System.in);
    		int n = sc.nextInt();
    		Node arr[] = new Node[n];
    		for (int i = 0; i < n; i++) { 
    			arr[i] = new Node(sc.next(), sc.next(), sc.next(), sc.next());
    		}
    		Arrays.sort(arr, 0, n, new mycmp());
    		for (int i = 0; i < n; i++) { 
    			System.out.println(arr[i].s + " " + arr[i].m + " " + arr[i].x + " " + arr[i].h);
    		}
    	}
    
    	static class Node { 
    		String s, m, x, h;
    
    		Node(String s, String m, String x, String h) { 
    			this.s = s;
    			this.m = m;
    			this.x = x;
    			this.h = h;
    		}
    	}
    }

[Link 1]: https://ac.nowcoder.com/acm/contest/11471/I
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