JavaScript: Check sum of consecutive positive integers

Last update on April 22 2023 12:19:13 (UTC/GMT +8 hours)

JavaScript Math: Exercise-73 with Solution

Write a JavaScript program to check if a given positive integer can be expressed as the sum of two or more consecutive positive integers.

Sample Data:
33 can be represented as 11 + 22
10 = 1+2+3+4
but 8 cannot be represented in this way.

Sample Solution-1:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript program to check sum of consecutive positive integers</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function test(n)
{
  return (n & (n - 1)) != 0
}
console.log(test(33));
console.log(test(10));
console.log(test(8));

Sample Output:

true
true
false

Flowchart:

$JavaScript Math flowchart of all prime factors of a given number$

Live Demo:

See the Pen javascript-math-exercise-73-1 by w3resource (@w3resource) on CodePen.

Sample Solution-2:

JavaScript Code:

function test(n){
  return !Number.isInteger(Math.log2(n))
}
console.log(test(33));
console.log(test(10));
console.log(test(8));

Sample Output:

true
true
false

Flowchart:

$JavaScript Math flowchart of all prime factors of a given number$

Live Demo:

See the Pen javascript-math-exercise-73-2 by w3resource (@w3resource) on CodePen.

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