去除字符串中的重复字符，算法不使用额外缓冲。如abbc->abc

#include <iostream>#include <string>#include <algorithm>using namespace std;void del(char *p){int i=0,j=1;//i用来覆盖，j用来遍历while(i<strlen(p)){if(p[i]==p[j]){j++;}else{i++;p[i]=p[j];j++;}}}void main(){char p[100];cin>>p;del(p);cout<<p<<endl;system("pause");}

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