27+ JavaScript Algorithm Interview Questions

JavaScript Algorithm Interview Questions:

• What is an algorithm, and why is it important in programming?
• How do you determine the time complexity of an algorithm?
• What is the difference between divide and conquer and dynamic programming?
• How do you implement the binary search algorithm in JavaScript?
• What is the difference between linear search and binary search?
• How do you solve the "two sum" problem in JavaScript?
• What is the sliding window technique, and when is it used?
• How do you find the longest common prefix of an array of strings in JavaScript?
• How do you detect if an array has duplicate elements using JavaScript?
• What is the role of recursion in solving algorithmic problems?
• How do you implement the Fibonacci sequence using both recursion and iteration in JavaScript?
• What is the difference between greedy algorithms and dynamic programming?
• How do you implement the merge sort algorithm in JavaScript?
• What is quicksort, and how does it work?
• How do you find the shortest path in a graph using Dijkstra's algorithm in JavaScript?
• What is the difference between DFS (Depth-First Search) and BFS (Breadth-First Search)?
• How do you check if a string is an anagram of another in JavaScript?
• How do you solve the "maximum subarray sum" problem in JavaScript?
• What is a hash map, and how is it used in algorithm design?
• How do you find the first non-repeating character in a string?
• How do you find all permutations of a string using recursion in JavaScript?
• What is the purpose of memoization, and how is it implemented in JavaScript?
• How do you solve the "climbing stairs" problem using dynamic programming?
• What is the role of backtracking in algorithmic problem-solving?
• How do you generate all combinations of a given array in JavaScript?
• How do you check if a binary tree is balanced in JavaScript?
• What is a topological sort, and how is it used in graph algorithms?
• How do you implement the "merge intervals" algorithm in JavaScript?
• How do you solve the "word break" problem using dynamic programming?
• How do you find the longest increasing subsequence of an array in JavaScript?
• What is the KMP algorithm, and how is it used for pattern matching?
• How do you solve the "trapping rainwater" problem in JavaScript?
• How do you find the median of two sorted arrays in JavaScript?
• What is the difference between brute force and optimized solutions in algorithm design?
• How do you solve the "minimum spanning tree" problem using Prim's or Kruskal's algorithm?
• What are the advantages of using heaps in solving algorithmic problems?
• How do you implement a custom sort function in JavaScript?
• How do you solve the "n-queens" problem using backtracking?
• What is the difference between NP-complete and NP-hard problems?