How to use a Frequency Counter Object In Javascript
Create a frequency counter object to count the occurrences of each character in the string to Iterate through the frequency counter object to find the character with the minimum frequency.
Example: JavaScript program utilizing an object frequency counter to find the least frequent character in a given string.
Javascript
function leastFrequentCharacter(str) { const freqCounter = {}; for (const char of str) { freqCounter[char] = (freqCounter[char] || 0) + 1; } let minFrequency = Infinity; let leastFrequentChar = ''; for (const char in freqCounter) { if (freqCounter[char] < minFrequency) { minFrequency = freqCounter[char]; leastFrequentChar = char; } } return leastFrequentChar;}console.log(leastFrequentCharacter('w3wiki')); |
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Least Frequent Character in String in JavaScript
In JavaScript, finding the least frequent character in a string involves identifying the character that occurs the fewest times within the given string by iterating through the string, counting the occurrences of each character, and determining the one with the minimum frequency.
This algorithmic task is essential for analyzing and manipulating strings in JavaScript, contributing to various applications such as data processing, pattern recognition, and text analytics.
There are several ways in which this task can be performed using JavaScript which are as follows:
Table of Content
- Using a Frequency Counter Object
- Sorting the Character Frequencies Array
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