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Reverse a string
#include <bits/stdc++.h> using namespace std; int main() { int t; cin>>t; while(t--) { string s; cin>>s; int n=s.length(); for(int i=0;i<n/2;i++) { s[i]=s[i]^s[n-i-1]; s[n-i-1]=s[i]^s[n-i-1]; s[i]=s[i]^s[n-i-1]; } cout<<s<<endl; } return 0; }
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