Looping Programs

1) Prime Number i)Finding whether the given number is prime or not: let num = 7; let isPrime = true; for (let i = 2; i < num; i++) { if (num % i === 0) { isPrime = false; break; } } if (num > 1 && isPrime) { console.log("Prime"); } else { console.log("Not Prime"); } Output: Prime ii)Printing all the prime numbers within the 2-50: for (let num = 2; num <= 50; num++) { let isPrime = true; for (let i = 2; i < num; i++) { if (num % i === 0) { isPrime = false; break; } } if (isPrime) { console.log(num); } } Output: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 2) Reverse Printing a Number let num=1234; let reverse=0; while(num>0){ let digit=num%10; reverse=reverse*10+digit; num=Math.floor(num/10); } document.write("Reverse: "+reverse); Output: Reverse: 4321 3) Count of Digits let num=1234; let count=0; while(num>0){ let digit=num%10; num=Math.floor(num/10); count++; } document.write("Count of digits: "+count); Output: Count of digits: 4 4) Sum of Digits let num = 123; l