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JavaScript: Check a number from three given numbers where two numbers are equal, find the third one

JavaScript Basic: Exercise-111 with Solution

Write a JavaScript program to check a number from three given numbers where two numbers are equal, find the third one.

Pictorial Presentation:

JavaScript: Check a number from three given numbers where two numbers are equal, find the third one.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Check a number from three given numbers where two numbers are equal, find the third one</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function find_third_number(x, y, z) {
   if((x!==y) && (x!==z) && (y!==z))
    return "Three numbers are unequal.";
	if(x==y) return z;
	if(x==z) return y;
	return x;
}

console.log(find_third_number(1,2,2))
console.log(find_third_number(1,1,2))
console.log(find_third_number(1,2,3))

Sample Output:

1
2
Three numbers are unequal.

Flowchart:

Flowchart: JavaScript - Check a number from three given numbers where two numbers are equal, find the third one

ES6 Version:

function find_third_number(x, y, z) {
   if((x!==y) && (x!==z) && (y!==z))
    return "Three numbers are unequal.";
	if(x==y) return z;
	if(x==z) return y;
	return x;
}

console.log(find_third_number(1,2,2))
console.log(find_third_number(1,1,2))
console.log(find_third_number(1,2,3))

Live Demo:

See the Pen javascript-basic-exercise-111 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to find the number of even values in sequence before the first occurrence of a given number.
Next: Write a JavaScript program to find the number of trailing zeros in the decimal representation of the factorial of a given number.

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JavaScript: Tips of the Day

Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters)

Example:

const isAnagram = (str1, str2) => {
  const normalize = str =>
    str
      .toLowerCase()
      .replace(/[^a-z0-9]/gi, '')
      .split('')
      .sort()
      .join('');
  return normalize(str1) === normalize(str2);
};
console.log(isAnagram('iceman', 'cinema')); // true

Output:

true