UVA 455 - Periodic Strings

A character string is said to have period k if it can be formed by concatenating one or more repetitions of another string of length k. For example, the string "abcabcabcabc"
has period 3, since it is formed by 4 repetitions of the string "abc". It also has periods 6 (two repetitions of "abcabc") and 12 (one repetition of "abcabcabcabc").

Write a program to read a character string and determine its smallest period.

Input

The first line oif the input file will contain a single integer N indicating how many test case that your program will test followed by a blank line. Each test case will contain a single character string
of up to 80 non-blank characters. Two consecutive input will separated by a blank line.

Output

An integer denoting the smallest period of the input string for each input. Two consecutive output are separated by a blank line.

Sample Input

1

HoHoHo

Sample Output

2

题解：输出排雷，最后一个输出后面不要输出空一行

#include<stdio.h>
#include<string.h>
int main()
{
	char a[100];
	int num, mini, judge;
	scanf("%d", &num);
	while(num--)
	{
		mini=0;
		scanf("%s", a);
		for(int i=1; i<=strlen(a); i++)//以前i个为周期
		{
			if( strlen(a) % i == 0 )
			{ 
				if(i == strlen(a) && mini == 0)
				{
					mini = i;
					break;
				}
				judge=1;
				for(int j=0; j<strlen(a)-i; j+=i)//判断以前i个为周期是否成立
				{
					for(int k=j; k< j + i ; k++)
					{
						if(a[k] != a[k+i])
						{
							judge = 0;
							break;	
						}
					}
					if(!(judge))
						break;
				}
				if(judge == 1)
				{
					mini = i;
					break;
				}
			} 
		}
		printf("%d\n", mini);
		if(num != 0)
			printf("\n");
	}
	return 0;
}