删除字符串中的数字

#include <iostream>using namespace std;void RemoveNumber(char * str){    char *read = str;    char *write = str;    while (*read != '\0')    {        if (*read < '0' || *read > '9')        {            *write = *read;            write++;        }        read++;    }    *write = '\0';}int main(){    char str[] = "a88b";    RemoveNumber(str);    cout<<str<<endl;    return 0;}

a 8  8  b

a b  8  b

a b \0  b

畅游笔试题，复杂度O(n)，STL remove算法。