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Title: #1426 - Counting Elements - LeetCode JavaScript Solutions

Open Graph Title: #1426 - Counting Elements - LeetCode JavaScript Solutions

X Title: #1426 - Counting Elements - LeetCode JavaScript Solutions

Description: Given an integer array arr, count how many elements x there are, such that x + 1 is also in arr. If there are duplicates in arr, count them ...

Open Graph Description: Given an integer array arr, count how many elements x there are, such that x + 1 is also in arr. If there are duplicates in arr, count them ...

X Description: Given an integer array arr, count how many elements x there are, such that x + 1 is also in arr. If there are duplicates in arr, count them ...

Keywords:

• leetcode
• javascript
• solutions
• algorithms
• data structures
• coding
• programming
• coding challenges
• coding problems
• coding solutions

Opengraph URL: https://leetcodejavascript.com/solutions/counting-elements

direct link

Domain: leetcodejavascript.com

{"@context":"https://schema.org","@type":"Code","url":"https://leetcodejavascript.com/solutions/counting-elements","name":"#1426 - Counting Elements - LeetCode JavaScript Solutions","description":"Given an integer array arr, count how many elements x there are, such that x + 1 is also in arr. If there are duplicates in arr, count them ...","programmingLanguage":"JavaScript","codeRepository":"https://github.com/JoshCrozier/leetcode-javascript","codeSampleType":"JavaScript","text":"/**\n * @param {number[]} arr\n * @return {number}\n */\nvar countElements = function(arr) {\n const set = new Set(arr);\n return arr.filter(num => set.has(num + 1)).length;\n};","keywords":"LeetCode 1426, #1426 - Counting Elements, Easy, JavaScript solution","learningResourceType":"Code","isAccessibleForFree":true,"educationalLevel":"intermediate","interactivityType":"mixed"}

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