Yahoo Interview Questions (64)

Practice real interview problems from Yahoo

Title	Solution	Practice	Difficulty	Companies	Topics
1. Two Sum	Solution	Solve	Easy	Accenture+128	Array Hash Table
9. Palindrome Number	Solution	Solve	Easy	Accenture+34	Math
13. Roman to Integer	Solution	Solve	Easy	Accenture+44	Hash Table Math+1
14. Longest Common Prefix	Solution	Solve	Easy	Accenture+56	String Trie
20. Valid Parentheses	Solution	Solve	Easy	Accenture+118	Stack String
35. Search Insert Position	Solution	Solve	Easy	Accenture+13	Array Binary Search
69. Sqrt(x)	Solution	Solve	Easy	Adobe+18	Binary Search Math
88. Merge Sorted Array	Solution	Solve	Easy	Accenture+41	Array Sorting+1
104. Maximum Depth of Binary Tree	Solution	Solve	Easy	Accenture+15	Binary Tree Breadth-First Search+2
121. Best Time to Buy and Sell Stock	Solution	Solve	Easy	Accenture+103	Array Dynamic Programming
141. Linked List Cycle	Solution	Solve	Easy	Accenture+24	Hash Table Linked List+1
202. Happy Number	Solution	Solve	Easy	Accenture+30	Hash Table Math+1
203. Remove Linked List Elements	Solution	Solve	Easy	Amazon+8	Linked List Recursion
205. Isomorphic Strings	Solution	Solve	Easy	Accenture+20	Hash Table String
206. Reverse Linked List	Solution	Solve	Easy	Accenture+35	Linked List Recursion
217. Contains Duplicate	Solution	Solve	Easy	Accenture+22	Array Hash Table+1
242. Valid Anagram	Solution	Solve	Easy	Accenture+40	Hash Table Sorting+1
283. Move Zeroes	Solution	Solve	Easy	Accenture+48	Array Two Pointers
349. Intersection of Two Arrays	Solution	Solve	Easy	Accenture+19	Array Binary Search+3
693. Binary Number with Alternating Bits	Solution	Solve	Easy	Amazon+3	Bit Manipulation
977. Squares of a Sorted Array	Solution	Solve	Easy	Accenture+18	Array Sorting+1
1030. Matrix Cells in Distance Order	Solution	Solve	Easy	Bloomberg+1	Array Geometry+3
1544. Make The String Great	Solution	Solve	Easy	Amazon+5	Stack String
1700. Number of Students Unable to Eat Lunch	Solution	Solve	Easy	Amazon+6	Array Queue+2
1757. Recyclable and Low Fat Products	Solution	Solve	Easy	Amazon+7	Database
1929. Concatenation of Array	Solution	Solve	Easy	Amazon+7	Array Simulation