JavaScript: Check a number is Sastry number or not
JavaScript Math: Exercise-87 with Solution
Write a JavaScript program that checks whether a number (positive integer) is a Sastry number or not.
The number N is a Sastry number when it is concatenated with N+1 and gives a perfect squares. Some Sastry numbers are 183, 328, 528, 715, 6099, 13224, 40495, 106755, 453288, 2066115, 2975208, 22145328, 28027683, 110213248...
Test Data:
(27) -> false
(328) -> true
(28027683) -> true
Sample Solution:
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript program to Check a number is Sastry number or not</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function test(n){
return Number.isInteger(Math.sqrt(`${n}${n + 1}`))
}
n = 27
console.log("Original string: "+n);
console.log("Check the said number is Sastry number or not: "+test(n))
n = 328
console.log("Original string: "+n);
console.log("Check the said number is Sastry number or not: "+test(n))
n = 28027683
console.log("Original string: "+n);
console.log("Check the said number is Sastry number or not: "+test(n))
Sample Output:
Original string: 27 Check the said number is Sastry number or not: false Original string: 328 Check the said number is Sastry number or not: true Original string: 28027683 Check the said number is Sastry number or not: true
Flowchart:

Live Demo:
See the Pen javascript-math-exercise-87 by w3resource (@w3resource) on CodePen.
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