(暴力求解)Encoding HDU1020

Encoding

链接：http://acm.hdu.edu.cn/showproblem.php?pid=1020

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 55038    Accepted Submission(s):
24576

Problem Description

Given a string containing only 'A' - 'Z', we could
encode it using the following method:

1. Each sub-string containing k
same characters should be encoded to "kX" where "X" is the only character in
this sub-string.

2. If the length of the sub-string is 1, '1' should be
ignored.

 

Input

The first line contains an integer N (1 <= N <=
100) which indicates the number of test cases. The next N lines contain N
strings. Each string consists of only 'A' - 'Z' and the length is less than
10000.

 

Output

For each test case, output the encoded string in a
line.

 

Sample Input

2

ABC

ABBCCC

 

Sample Output

ABC

A2B3C

 

Author

ZHANG Zheng

可以用暴力求解法求解。

JAVA代码如下：

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        Scanner inScanner = new Scanner(System.in);
        int num = inScanner.nextInt();
        inScanner.nextLine();
        while(num-->0) {
            String string = inScanner.nextLine();
            string+="a";//这个要注意，防止接下来的统计时会有溢出的。
            int sum = 1;
            for(int i = 0;i < string.length()-1;i++) {
                if(string.charAt(i) == string.charAt(i+1)) {   

                    sum++;
                }
                else {
                    if(sum==1) {
                        System.out.print(string.charAt(i));
                    }
                    else {
                        System.out.print(sum + "" + string.charAt(i));
                        sum = 1;
                    }
                }
            }
            System.out.println();//这个很迷，我之前由于用了String.out.print("\n");而WA了好几次。。。。。。

        }
    }
}

C++代码：

#include<iostream>
#include<string>
using namespace std;
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        string a;
        cin>>a;
        int len=a.length();
        int sum=;
        for(int i=;i<len;i++)
        {
            if(a[i]==a[i+])
            {
                sum++;
            }
            else
            {
                if(sum==)
                {
                    cout<<a[i];
                    sum=;
                 }
                else
                {
                    cout<<sum<<a[i];
                    sum=;
                }
            }
        }
        cout<<endl;
    }
    return ;
}