Top LeetCode Interview Questions
2 min readSep 21, 2020
Facebook Interview
#1 Two Sum#200 Number of Islands#20 Valid Parentheses#121 Best Time to Buy and Sell Stock#56 Merge Intervals#206 Reverse Linked List
Google Interview
#155 Min Stack#200 Number of Islands#20 Valid Parentheses#42 Trapping Rain Water#56 Merge Intervals#681 Next Closest Time#139 Word Break#31 Next Permutation
Amazon Interview
#1 Two Sum#2 Add Two Numbers#3 Longest Substring Without Repeating Characters#200 Number of Islands#20 Valid Parentheses#5 Longest Palindromic Substring#138 Copy List with Random Pointer#121 Best Time to Buy and Sell Stock#21 Merge Two Sorted Lists
Top Interview Questions
#344 Reverse String#412 Fizz Buzz#136 Single Number#104 Maximum Depth of Binary Tree#283 Move Zeroes#371 Sum of Two Integers#206 Reverse Linked List#171 Excel Sheet Column Number#169 Majority Element#13 Roman to Integer#237 Delete Node in a Linked List#122 Best Time to Buy and Sell Stock II#242 Valid Anagram#217 Contains Duplicate#387 First Unique Character in a String#108 Convert Sorted Array to Binary Search Tree#268 Missing Number#350 Intersection of Two Arrays II#121 Best Time to Buy and Sell Stock#21 Merge Two Sorted Lists#202 Happy Number#118 Pascal’s Triangle#70 Climbing Stairs#101 Symmetric Tree#53 Maximum Subarray#326 Power of Three#191 Number of 1 Bits#198 House Robber#66 Plus One#1 Two Sum#38 Count and Say#26 Remove Duplicates from Sorted Array#172 Factorial Trailing Zeroes#20 Valid Parentheses#141 Linked List Cycle#234 Palindrome Linked List#88 Merge Sorted Array#155 Min Stack#14 Longest Common Prefix#160 Intersection of Two Linked Lists#28 Implement strStr()#69 Sqrt(x)#190 Reverse Bits#125 Valid Palindrome#189 Rotate Array#204 Count Primes#7 Reverse Integer#94 Binary Tree Inorder Traversal