swap to no without using dummy variable or arithmetic operations

• int x=1,y=2;
  // code to swap x and without using arthemetic operators
  x=x^y; //x(xor)y
  y=x^y;
  x=x^y;
  firstly
  1=00001
  2=00010
  ---------
  x=x^y=00011
  y=x^y
  00011
  00010
  ------
  00001 //here we get y=1
  x=x^y
  00011
  00001
  ------
  00010 // here we get x=2
  
  
• 9 years agoHelpfull: Yes(4) No(0)
• A very simple solution
  suppose int x=2,y=3;
  //swap code makes use of xor(^) operator.
  x=0010
  y=0011
  x=x^y;//0001
  y=x^y;//0010 i.e x=2
  x=x^y;//0011 i.e y=3
• 8 years agoHelpfull: Yes(2) No(0)
• int x = 1, y = 5;
  
  // Code to swap 'x' and 'y'
  x = x + y; // x now becomes 6
  y = x - y; // y becomes 1
  x = x - y; // x becomes 5
• 9 years agoHelpfull: Yes(0) No(3)
• x=x^y;
  y=x^y;
  x=x^y;
• 9 years agoHelpfull: Yes(0) No(0)
• a=1 b=2
  a=a+b; a=3
  b=a-b; b=3-2=1
  a=a-b; a=3-1=2
  a=2
  b=1
• 9 years agoHelpfull: Yes(0) No(4)
• b=((a+b)-(a=b));
• 9 years agoHelpfull: Yes(0) No(2)
• swap(int ,int)
  {
  int a,b;
  a=a*b;
  b=a/b;
  a=a/b;
  }
• 8 years agoHelpfull: Yes(0) No(2)