C++ String 之 substr

C++ String 之 substr

代码：

// TSWorld
#include <bits/stdc++.h>
using namespace std;int main()
{string str,sub_str;str = "TSWorld";for(int i = 0;i < str.length();i++){for(int  j = i;j >= 0;j--) {int length = i-j+1;sub_str = str.substr(j,length);cout<<sub_str<<endl;}}return 0;
}

Output：

T
S
TS
W
SW
TSW
o
Wo
SWo
TSWo
r
or
Wor
SWor
TSWor
l
rl
orl
Worl
SWorl
TSWorl
d
ld
rld
orld
World
SWorld
TSWorld