pat 1050

Given two strings S₁ and S₂, S = S₁ - S₂ is defined to be the remaining string after taking all the characters in S₂ from S₁. Your task is simply to calculate S₁ - S₂ for any given strings. However, it might not be that simple to do it fast.

Input Specification:

Each input file contains one test case. Each case consists of two lines which gives S₁ and S₂, respectively. The string lengths of both strings are no more than 10⁴. It is guaranteed that all the characters are visible ASCII codes and white space, and a new line character signals the end of a string.

Output Specification:

For each test case, print S₁ - S₂ in one line.

They are students.
aeiou

Thy r stdnts.

#include <stdio.h>
#include <string.h>char orinal[10010];
char dele[10010];int main()
{int i, j;char str[200];memset(str, 0, sizeof(str));gets(orinal);gets(dele);int len = strlen(dele);for(i = 0; i < len; i++)str[dele[i]] = 1;len = strlen(orinal);for(i = 0; i < len; i++){if(str[orinal[i]] == 1)continue;printf("%c", orinal[i]);}printf("\n");return 0;
}