Advanced-JavaScript-With-Projects/Array1.html at main · marleyDip/Advanced-JavaScript-With-Projects · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Array Exercise</title>
  </head>
  <body>
    <script>
      /* Create a while loop that exits after counting 5 prime numbers & Modify the above loop to finish using break */

      function isPrime(num) {
        if (num <= 1) return false;

        //for (let i = 2; i < num; i++) here need check 2 to 99

        // but here, √100 = 10; so check 2 to 10
        // √29 = 5.38; check 2, 3, 4, 5...don't need check 2 to 28

        for (let i = 2; i <= Math.sqrt(num); i++) {
          if (num % i === 0) {
            return false;
          }
        }
        return true;
      }

      console.log(isPrime(100));
      console.log(isPrime(29));

      let num = 2;
      let i = 0;

      while (true) {
        if (isPrime(num)) {
          // if true, print and increase i
          console.log(num);
          i++;

          if (i >= 10) {
            break;

            // num++; Only increment if prime
          }
        }
        num++; // Increment if not prime
      }

      //   while (i < 5) {
      //     if (isPrime(num)) {
      //       console.log(num);
      //       i++;
      //     }
      //     num++;
      //   }

      /* Using continue only print positive numbers from the given array [1, -6, 5, 7, -98] */

      let nums = [1, -6, 5, 7, -98];

      for (let i = 0; i < nums.length; i++) {
        if (nums[i] < 0) continue;

        console.log(nums[i]);
      }

      /* Using accumulator pattern concatenate all the strings in the given array ['Deep', 'Coding', 'JavaScript', 'Course', 'Is', 'Best'] */

      let arr = ["Deep", "Coding", "JavaScript", "Course", "Is", "Best"];

      let result = "";
      for (let i = 0; i < arr.length; i++) {
        result += arr[i] + " -";
      }

      console.log(result); // Deep - Coding - JavaScript - Course - Is - Best -

      console.log(arr.join("")); //DeepCodingJavaScriptCourseIsBest

      console.log(arr.join(",")); // Deep,Coding,JavaScript,Course,Is,Best

      console.log(arr.join(" ")); //Deep Coding JavaScript Course Is Best
    </script>
  </body>
</html>