Yandex Interview Questions (134)

Practice real interview problems from Yandex

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
20. Valid Parentheses	Solution	Solve	Easy	Accenture+118	Stack String
21. Merge Two Sorted Lists	Solution	Solve	Easy	Adobe+39	Linked List Recursion
26. Remove Duplicates from Sorted Array	Solution	Solve	Easy	Accenture+27	Array Two Pointers
27. Remove Element	Solution	Solve	Easy	Adobe+9	Array Two Pointers
35. Search Insert Position	Solution	Solve	Easy	Accenture+13	Array Binary Search
88. Merge Sorted Array	Solution	Solve	Easy	Accenture+41	Array Sorting+1
101. Symmetric Tree	Solution	Solve	Easy	Amazon+11	Binary Tree Breadth-First Search+2
110. Balanced Binary Tree	Solution	Solve	Easy	Amazon+9	Binary Tree Depth-First Search+1
121. Best Time to Buy and Sell Stock	Solution	Solve	Easy	Accenture+103	Array Dynamic Programming
125. Valid Palindrome	Solution	Solve	Easy	Accenture+41	String Two Pointers
136. Single Number	Solution	Solve	Easy	Accenture+14	Array Bit Manipulation
141. Linked List Cycle	Solution	Solve	Easy	Accenture+24	Hash Table Linked List+1
169. Majority Element	Solution	Solve	Easy	Accenture+21	Array Counting+3
181. Employees Earning More Than Their Managers	Solution	Solve	Easy	Accenture+10	Database
205. Isomorphic Strings	Solution	Solve	Easy	Accenture+20	Hash Table String
206. Reverse Linked List	Solution	Solve	Easy	Accenture+35	Linked List Recursion
228. Summary Ranges	Solution	Solve	Easy	Amazon+9	Array
232. Implement Queue using Stacks	Solution	Solve	Easy	Amazon+10	Design Queue+1
234. Palindrome Linked List	Solution	Solve	Easy	Adobe+17	Linked List Recursion+2
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
350. Intersection of Two Arrays II	Solution	Solve	Easy	Amazon+8	Array Binary Search+3
387. First Unique Character in a String	Solution	Solve	Easy	Accenture+24	Counting Hash Table+2
392. Is Subsequence	Solution	Solve	Easy	Adobe+18	Dynamic Programming String+1
415. Add Strings	Solution	Solve	Easy	Airbnb+14	Math Simulation+1
485. Max Consecutive Ones	Solution	Solve	Easy	Accenture+12	Array
605. Can Place Flowers	Solution	Solve	Easy	Airbnb+15	Array Greedy
643. Maximum Average Subarray I	Solution	Solve	Easy	Amazon+9	Array Sliding Window
674. Longest Continuous Increasing Subsequence	Solution	Solve	Easy	Amazon+4	Array
680. Valid Palindrome II	Solution	Solve	Easy	Amazon+15	Greedy String+1
771. Jewels and Stones	Solution	Solve	Easy	Adobe+7	Hash Table String
896. Monotonic Array	Solution	Solve	Easy	Amazon+6	Array
933. Number of Recent Calls	Solution	Solve	Easy	Affirm+9	Data Stream Design+1
938. Range Sum of BST	Solution	Solve	Easy	Amazon+5	Binary Search Tree Binary Tree+2
977. Squares of a Sorted Array	Solution	Solve	Easy	Accenture+18	Array Sorting+1
1436. Destination City	Solution	Solve	Easy	Amazon+3	Array Hash Table+1
1496. Path Crossing	Solution	Solve	Easy	Amazon+2	Hash Table String
1572. Matrix Diagonal Sum	Solution	Solve	Easy	Amazon+5	Array Matrix
1656. Design an Ordered Stream	Solution	Solve	Easy	Bloomberg+3	Array Data Stream+2
2006. Count Number of Pairs With Absolute Difference K	Solution	Solve	Easy	Amazon+6	Array Counting+1
2215. Find the Difference of Two Arrays	Solution	Solve	Easy	Accenture+6	Array Hash Table
2570. Merge Two 2D Arrays by Summing Values	Solution	Solve	Easy	Amazon+5	Array Hash Table+1
2629. Function Composition	Solution	Solve	Easy	Amazon+4
2665. Counter II	Solution	Solve	Easy	Amazon+3
2666. Allow One Function Call	Solution	Solve	Easy	Amazon+3
2667. Create Hello World Function	Solution	Solve	Easy	Adobe+10