Complete Problem Index
Browse all 59 technical interview problems on our site. Each problem includes detailed strategy, complete solution with code, complexity analysis, and related problems.
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- Easy-Medium Problems (5)
- Medium Problems (49)
- Hard Problems (5)
Easy-Medium Problems (5)
Great for beginners and interview warm-ups.
- Check if a Linked list is a Palindrome or Not
- Find Longest Palindrome In A String
- Palindromes
- Reverse a doubly linked list
- Reverse a String
Medium Problems (49)
Most common interview difficulty. Master these for FAANG interviews.
- 100 Factorial
- Amazon Interview Question: Count Negative Integers in Matrix
- Bit Manipulation: Essential Tricks and Techniques
- Boolean String Value
- Box ‘o Numbers
- Building a Stack with a getMax() function
- Bumblebee
- Card Trick Without the Trick
- Check If a Number is Power of Two
- Chessboard
- Classic Weighing
- Clock
- Coin Rolls
- Compute X^Y For Floats and Negative Values
- Cube
- Find Out if a Linked List has a Cycle
- Find The Depth of a Binary Tree
- Fruit Jar Problem
- Function that Multiples 2 Integers
- Fuse on Fire
- Getting a fair result with an unfair coin
- Gold Chain
- How many floors can an egg be dropped without breaking?
- Implement a Function to Return a Ratio
- Implement a rate limiter
- Implement LRU Cache
- Implement Trie (Prefix Tree)
- int atoi( char* pStr )
- Kadane’s Algorithm: Maximum Subarray Sum
- Linked List
- Missing country code
- Missing or Duplicate Number in an Array
- Monty Hall Problem
- Prime number problem
- Print String Permutations
- Probability Distribution Function
- Red Marbles, Blue Marbles
- Removing a Character from a String
- Right Rotate an array by k elements
- Server to Process Fair Number of Functions
- Sliding Window Maximum
- Storing 1 million phone numbers
- Sum it Up
- Sum Up a Pair in Array
- Topological Sort
- Treasure Island
- Write a Function for r and 5()
- Write a program for producer-consumer problem
- XOR using NAND gates
Hard Problems (5)
Advanced problems for senior roles and top companies.