ACM程序设计 -Y(*字符串数字个数问题)

本文介绍了一种基于描述字符串中数字序列的算法实现。通过遍历输入的数字串,算法能够生成后续项,即每个数字及其连续出现次数的描述。文章提供了完整的C++代码示例,展示了如何有效地解析并输出看说数列。
Description

The look and say sequence is defined as follows. Start with any string of digits as the first element in the sequence. Each subsequent element is defined from the previous one by "verbally" describing the previous element. For example, the string 122344111 can be described as "one 1, two 2's, one 3, two 4's, three 1's". Therefore, the element that comes after 122344111 in the sequence is 1122132431. Similarly, the string 101 comes after 1111111111. Notice that it is generally not possible to uniquely identify the previous element of a particular element. For example, a string of 112213243 1's also yields 1122132431 as the next element.

Input

The input consists of a number of cases. The first line gives the number of cases to follow. Each case consists of a line of up to 1000 digits.

Output

For each test case, print the string that follows the given string.

Sample Input



3
122344111
1111111111
12345

Sample Output



1122132431
101
1112131415

题意:

输入一行数 例如  1234;输出1个1,1个2,一个3,一个4 这种意思,格式是11121314.

思路:用一个p计数,如果当前的数 和下一个数 相等,则p++;如果不相等,那么就输出 p和数组里的这个数。



#if   0                         // 25
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,p=1,ni;
cin>>n;

for(int i=0;i<n;i++)
{
 
 string a;
 cin>>a;
  ni=a.size();
 
for(int j=0;j<ni;j++)
{
 if(a[j]==a[j+1])
 p++;
 else
{
 cout<<p<<a[j]; p=1;
}
 
}
cout<<endl;
}
return 0;  
}
 
#endif


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