JavaScript Arrays Coding Practice Problems
Last Updated : 24 Feb, 2025
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Arrays are one of the most fundamental data structures in JavaScript, allowing efficient storage and manipulation of data. This curated list of Coding Practice Problems will help you to master JavaScrip Arrays. Whether you're a beginner or an experienced developer, these problems will enhance your JavaScript array manipulation skills!
Arrays Practice Problems
Easy
- Array Search
- Size of an Array
- Largest Element in Array
- Day of the week
- Second Largest
- Third largest element
- Three Great Candidates
- Move All Zeroes to End
- Reverse array in groups
- Wave Array
- Adding One
- Repetitive Addition Of Digit
- Remove Duplicates Sorted Array
- Alternate Positive Negative
- Product array puzzle
- Equilibrium Point
- Convert array into Zig-Zag
- Missing in Array
- Check Equal Arrays
- Convert to Roman No
- Closest Strings
- Divisible by 7
- Encrypt the string - 2
- Isomorphic Strings
- Equal point in a string of brackets
Medium
- Check if array is sorted
- Count the Zeros
- Average
- Pascal Triangle
- Determinant of a Matrix
- Number of paths
- Rotate Array
- Array Leaders
- Missing And Repeating
- Missing ranges of numbers
- Majority Element
- Majority Element II
- Stock Buy and Sell
- Minimize the Heights II
- Kadane's Algorithm
- Maximum Product Subarray
- Subarrays Product Less than K
- Split array in three equal sum subarrays
- Maximize Number of 1's
- Min Swaps to Group 1s
- Sort 0s, 1s and 2s
- Rearrange Array Alternately
- K-th element of two Arrays
- Indexes of Subarray Sum
- Minimum Platforms
- Form the Largest Number
- Largest subarray with 0 sum
Hard
- Segmented Sieve
- Stock Buy and Sell – Multiple Transaction
- Last Moment Before All Ants Fall Out of a Plank
- Trapping Rain Water
- Max Circular Subarray Sum
- Smallest Positive Missing
- Minimum Jumps
- Not a subset sum
- Smallest range in K lists
- Candy problem
- Subarrays with K Distinct Integers
- Next Smallest Palindrome
- Swapping pairs make sum equal
- Max sum in the configuration