有字符串s1和s2，要求在s1中删除所有s2的字符，算法要快
例如：str1为 "asdfsa123fasdf123452345fasfasdf182734891624389sadfaklsjfklj"
str2为 "0123456789"
删除后
str1为 "asdfsafasdffasfasdfsadfaklsjfklj"
void del_chars(char *str, char *chars){ char ascii_buff = {0}; char buf; char *ps1; char *ps2; ps1 = chars; while (*ps1) { // 遍历chars，将要被删除的字符对应数组的位置置为1。 ascii_buff[*ps1++] = 1; } ps2 = str; while (*ps2) { // 遍历str，将str中要被删除的字符也置为1。 if ( ascii_buff[*ps2] == 1 ) { *ps2 = 1; } ps2++; } ps1 = str; // 将str中所有为1的位置清理掉。 ps2 = buf; while (*ps1) { if (*ps1 != 1) { *ps2 = *ps1; ps2++; } ps1++; } *ps2 = '\0'; strcpy(str, buf);}
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