細(xì)節(jié)!細(xì)節(jié)!細(xì)節(jié)決定成敗，s中和t中元素比較后j要++,原來(lái)的寫法沒(méi)有++,導(dǎo)致錯(cuò)了很多次。擦！
#include <stdio.h>
#include <string.h>
#define N 1048576
char a[N], b[N];
int main()
{
while(~scanf("%s %s", a, b))
{
int l1 = strlen(a), l2 = strlen(b);
int i(0), j(0);
while(b[j])
{
if(a[i] == b[j])
{
i++;
if(i == l1) break;
}
j++;
}
if(i == l1) puts("Yes");
else puts("No");
}
return 0;
}