Question

How to cyclically rotate the elements of int array right by one in TypeScript

Answer 1

function rotate_array_right_one_time(arr : any) {
	const last = arr[arr_size - 1];
    
	for (let i = arr_size - 1; i > 0; i--) {
     	arr[i] = arr[i - 1];
	}
   
	arr[0] = last;
}


let arr:number[] = [8, 5, 4, 7, 2, 9, 3];

const arr_size = arr.length;

rotate_array_right_one_time(arr);

for (let i = 0; i < arr_size; i++) {
     console.log(arr[i]);
}
      
  
    
      
      
/*
run:
      
3 
8 
5 
4 
7 
2 
9 
      
*/

 

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