标签:blog http io os ar for sp 2014 art
字符串循环移位:假设有一串字符串a,b,c,d,e,f,g,h,向左循环移位2为,得c,d,e,f,g,h,a,b。
#include<iostream>
using namespace std;
void reverse(char* a, int start, int len){
int count = 0;
for(int i = start, j = start + len -1; ; ++i, --j){
if((++count) <= len/2){
a[i] = a[i] + a[j];
a[j] = a[i] - a[j];
a[i] = a[i] - a[j];
}else{
break;
}
}
}
void transposition(char* a, int n, int len){
reverse(a,0,len);
reverse(a,0,len-n);
reverse(a,len-n,n);
}
void main(){
char a[] = {'a','b','c','d','e','f','g','h'};
int len = sizeof(a);
transposition(a,9%len,len);
for(int i = 0; i < len; ++i){
cout<<a[i]<<" ";
}
cout<<endl;
}结果:
标签:blog http io os ar for sp 2014 art
原文地址:http://blog.csdn.net/huojushou1128/article/details/39637461