Question

How to swap two numbers without using third variable in TypeScript

Answer 1

let a:number = 7, b = 13;
      
a = a + b;
b = a - b;
a = a - b;   
 
console.log("a = " + a);
console.log("b = " + b);

 
 
/*
run:
  
"a = 13" 
"b = 7" 
   
*/

 

70+ SQL courses for beginners and professionals

Answer 2

let a:number = 7, b = 13;
      
[a, b] = [b, a];  
 
console.log("a = " + a);
console.log("b = " + b);

 
 
/*
run:
  
"a = 13" 
"b = 7" 
   
*/

 

70+ SQL courses for beginners and professionals