JavaScript: Rearrange characters of a given string in such way that it will become equal to another given string

Last update on May 30 2022 10:00:28 (UTC/GMT +8 hours)

JavaScript Basic: Exercise-99 with Solution

Write a JavaScript program to check whether it is possible to rearrange characters of a given string in such way that it will become equal to another given string.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Rearrange characters of a given string in such way that it will become equal to another given string</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function rearrangement_characters(str1, str2) {

  var first_set = str1.split(''),
      second_set = str2.split(''),
      result = true;

  first_set.sort();
  second_set.sort();

  for (var i = 0; i < Math.max(first_set.length, second_set.length); i++) {
    if (first_set[i] !== second_set[i]) {
      result = false;
    }
  }

  return result;
}

console.log(rearrangement_characters("xyz", "zyx"))
console.log(rearrangement_characters("xyz", "zyp"))

Sample Output:

true
false

Flowchart:

ES6 Version:

function rearrangement_characters(str1, str2) {
  const first_set = str1.split('');
  const second_set = str2.split('');
  let result = true;

  first_set.sort();
  second_set.sort();

  for (let i = 0; i < Math.max(first_set.length, second_set.length); i++) {
    if (first_set[i] !== second_set[i]) {
      result = false;
    }
  }

  return result;
}

console.log(rearrangement_characters("xyz", "zyx"))
console.log(rearrangement_characters("xyz", "zyp"))

Live Demo:

See the Pen javascript-basic-exercise-99 by w3resource (@w3resource) on CodePen.

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Previous: Write a JavaScript program to switch case of the minimum possible number of letters to make a given string written in the upper case or in the lower case.
Next: Write a JavaScript program to check if there is at least one element which occurs in two given sorted arrays of integers.

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