处理含有删除符号的字符串
假设删除符是*,那么abc**ef*g
处理后的结果应是aeg
要求不能开辟新的内存空间
char* process(char* s){
char* p = s;
char* q = s;
while(*p != '\0'){
if (*p == '*'){
if (q > s)
--q;
}else{
*q = *p;
++q;
}
++p;
}
*q = '\0';
return s;
}
测试:
char s[] = "abc****de*f";
printf("%s=>", s);
printf("%s", process(s));
输出:
"abc****de*f=>df