int n = 12345; int left = n; int rev = 0; while(left>0) { r = left % 10; rev = rev * 10 + r; left = left / 10; } Console.WriteLine(rev);
public int ReverseInt(int num) { int result=0; while (num>0) { result = result*10 + num%10; num /= 10; } return result; }
var
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