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JavaScript: Check whether it is possible to replace $ in a specified expression

JavaScript Basic: Exercise-89 with Solution

Write a JavaScript program to check whether it is possible to replace $ in a given expression x $ y = z with one of the four signs +, -, * or / to obtain a correct expression.

For example x = 10, y = 30 and z = 300, we can replace $ with a multiple operator (*) to obtain x * y = z

Pictorial Presentation:

JavaScript: Check whether it is possible to replace $ in a specified expression.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Check whether it is possible to replace $ in a specified expression</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function check_arithmetic_Expression(x, y, z) {
  return x + y == z || x * y == z || x / y == z || x - y == z;
}

console.log(check_arithmetic_Expression(10, 25, 35))
console.log(check_arithmetic_Expression(10, 25, 250))
console.log(check_arithmetic_Expression(30, 25, 5))
console.log(check_arithmetic_Expression(100, 25, 4.0))
console.log(check_arithmetic_Expression(100, 25, 25))

Sample Output:

true
true
true
true
false

Flowchart:

Flowchart: JavaScript - Check whether it is possible to replace $ in a specified expression

ES6 Version:

function check_arithmetic_Expression(x, y, z) {
  return x + y == z || x * y == z || x / y == z || x - y == z;
}

console.log(check_arithmetic_Expression(10, 25, 35))
console.log(check_arithmetic_Expression(10, 25, 250))
console.log(check_arithmetic_Expression(30, 25, 5))
console.log(check_arithmetic_Expression(100, 25, 4.0))
console.log(check_arithmetic_Expression(100, 25, 25))

Live Demo:

See the Pen javascript-basic-exercise-89 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to check whether two given integers are similar or not, if a given divisor divides both integers and it does not divide either.
Next: Write a JavaScript program to find the kth greatest element of a given array of integers.

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04