7 Reverse Integer (digital inversion Easy)

Title meaning: int number reversal

Considerations: Cross-border issues

1 classSolution {2  Public:3     intReverseintx) {4         Longans=0;5          while(x) {6ans=ans*Ten+x%Ten;7x=x/Ten;8         }9         return(Ans > Int_max | | ans < int_min)?0: ans;Ten     } One};

Long in Ps:leetcode is longer than int, but in Visual C + +, long and int take the same range of values

So here's the code that I think is better.

1 classSolution {2  Public:3     intReverseintx) {4         intans=0;5          while(x>=Ten|| x<=-Ten){6ans=ans*Ten+x%Ten;7x=x/Ten;8         }9         if(ans>int_max/Ten|| (ans==int_max/Ten&&x>int_max%Ten))Ten             return 0; One         if(ans<int_min/Ten|| (ans==int_min/Ten&&x<int_min%Ten)) A             return 0; -         returnans*Ten+x%Ten; -     } the};

　　　

7 Reverse Integer (digital inversion Easy)