Question

How to swap two numbers without using third variable in Node.js

Answer 1

let a = 8, b = 13;
      
a = a + b;
b = a - b;
a = a - b;   
 
console.log("a = " + a);
console.log("b = " + b);

 
 
/*
run:
  
a = 13
b = 5
   
*/

 

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Answer 2

let a = 8, b = 13;
      
[a, b] = [b, a];  
 
console.log("a = " + a);
console.log("b = " + b);

 
 
/*
run:
  
a = 13
b = 5
   
*/

 

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