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Feb 11th, 2016
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  1. string tos(int n){
  2. if(n==0)
  3. return "0";
  4. string ans;
  5. char c;
  6. while(n!=0){
  7. ans+='0'+n%10;
  8. n/=10;
  9. }
  10. for(int i=0;i<ans.size()/2;i++){
  11. c=ans[i];
  12. ans[i]=ans[ans.size()-1-i];
  13. ans[ans.size()-1-i]=c;
  14. }
  15. return ans;
  16. }
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