C++ :
#include<bits/stdc++.h> using namespace std; string s; int main() { cin>>s; int len=s.size(); for(int i=len-1;i>0;i--) for(int j=0;j<i;j++) if(s[j]>s[j+1]) swap(s[j],s[j+1]); cout<<s; return 0; }
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