Find out the larger number of two numbers without any comparison, and find out the larger number in two numbers without any comparison.

Source: Internet
Author: User

Without any comparison, find out the larger number of two numbers public class twonumwithoutjudge{//Judge a number of symbols (return 0 negative, 1 positive) public static int getsign (int x)   
	   {return ((x>>31) ^1) &1;
	   	   }//Method 1 (limited premise A is not equal to B, may overflow) public static int GetMax01 (int a,int b) {int c=a-b;

	   	   int d=b-a;
	   	   int c=getsign (C);
	   	   int d=getsign (D);
	   return c*a+d*b;
	   }//XOR or operation public static int Getflip (int n) {return n^1;
	   ///Get a number of symbols (1 is positive, 0 is negative) public static int sign (int n) {return ((n>>31) &1) ^1;
           }//Method 2 public static int GetMax02 (int a,int b) {int c=a-b;
           int Sa=sign (a);
           int sb=sign (b);
           int sc=sign (c);
           int DIFSAB=SA^SB;
           int Samesab=getflip (DIFSAB);
           int Retrunb=getflip (Retruna);
	   return A*RETRUNA+B*RETRUNB; } PubLic static void Main (String[]args) {//system.out.println ("Hello");
       	       int a = 100;
       	       int b=120;
       	       System.out.println (GetMax01 (a,b));

       System.out.println (GetMax02 (a,b)); }

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