How can I print the 1st and 2nd elements on a line, then 2nd and 3rd on the next line, then 3rd and 4th next line, and so on

I’m trying to print array elements 1st and 2nd in one line, then next line 2nd and 3rd elements, but I’m still stuck.

Input:

const arr = [10, 20, 30, 40, 50];

Output

10 - 20
20 - 30
30 - 40
40 - 50

>Solution :

for (let i = 0; i < arr.length - 1; i ++) {
  console.log(arr[i] + ' - ' + arr[i+1]);
}

but I’d recommend using the syntax

console.log(`${arr[i]} - ${arr[i+1]}`)