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#37 Best Time to Buy and Sell Stock
Google Arrays
Easy
5200M
53.4%
Solve
#38 Longest Repeating Character Replacement
Amazon Hash Table Sliding Window
Medium
1800M
41.5%
Solve
#39 Redundant Connection
Google Graphs Union Find
Medium
1400M
61.1%
Solve
#40 Contains Duplicate
Microsoft Arrays Sorting
Easy
4100M
61.3%
Solve
#41 Edit Distance
Google Dynamic Programming
Hard
1200M
35.8%
Solve
#42 Daily Temperatures
Amazon Stacks Arrays
Medium
2400M
67.1%
Solve
#43 Remove Nth Node From End of List
Apple Linked List
Easy
3800M
47.9%
Solve
#44 Letter Combinations of a Phone Number
Google Facebook Backtracking Strings
Medium
2600M
59.8%
Solve
#45 Binary Tree Maximum Path Sum
Google Trees DFS
Hard
1300M
40.2%
Solve
#46 Climbing Stairs
Amazon Math
Easy
6400M
52.0%
Solve
#47 Merge Intervals
Microsoft Intervals Greedy
Medium
3900M
46.7%
Solve
#48 Network Delay Time
Google Graphs Dijkstra
Hard
1500M
50.1%
Solve
#49 Find Peak Element
Amazon Binary Search Arrays
Medium
2200M
48.2%
Solve
#50 Word Search II
Google Amazon Trie DFS
Hard
1100M
35.5%
Solve