Hash Table

Subscribe to see which companies asked this question

You have solved  0/ 73 problems.
# Title Acceptance Difficulty
726 Number of Atoms 45.6% Hard
720 Longest Word in Dictionary 40.0% Easy
718 Maximum Length of Repeated Subarray 40.0% Medium
711 Number of Distinct Islands II 37.7% Hard
694 Number of Distinct Islands 43.8% Medium
692 Top K Frequent Words 40.7% Medium
690 Employee Importance 52.9% Easy
676 Implement Magic Dictionary 50.0% Medium
648 Replace Words 47.3% Medium
645 Set Mismatch 40.0% Easy
632 Smallest Range 42.0% Hard
624 Maximum Distance in Arrays 34.4% Easy
609 Find Duplicate File in System 52.4% Medium
599 Minimum Index Sum of Two Lists 46.3% Easy
594 Longest Harmonious Subsequence 40.9% Easy
575 Distribute Candies 58.4% Easy
554 Brick Wall 46.1% Medium
535 Encode and Decode TinyURL 74.2% Medium
525 Contiguous Array 40.9% Medium
508 Most Frequent Subtree Sum 52.2% Medium
500 Keyboard Row 59.7% Easy
463 Island Perimeter 57.5% Easy
454 4Sum II 47.2% Medium
451 Sort Characters By Frequency 51.1% Medium
447 Number of Boomerangs 45.7% Easy
438 Find All Anagrams in a String 33.8% Easy
409 Longest Palindrome 45.5% Easy
389 Find the Difference 51.0% Easy
381 Insert Delete GetRandom O(1) - Duplicates allowed 29.1% Hard
380 Insert Delete GetRandom O(1) 39.4% Medium
359 Logger Rate Limiter 60.1% Easy
358 Rearrange String k Distance Apart 31.7% Hard
356 Line Reflection 30.1% Medium
355 Design Twitter 25.6% Medium
350 Intersection of Two Arrays II 44.8% Easy
349 Intersection of Two Arrays 47.6% Easy
347 Top K Frequent Elements 48.7% Medium
340 Longest Substring with At Most K Distinct Characters 39.2% Hard
336 Palindrome Pairs 26.6% Hard
325 Maximum Size Subarray Sum Equals k 43.0% Medium
314 Binary Tree Vertical Order Traversal 37.3% Medium
311 Sparse Matrix Multiplication 51.8% Medium
299 Bulls and Cows 35.4% Medium
290 Word Pattern 33.2% Easy
288 Unique Word Abbreviation 17.3% Medium
274 H-Index 33.5% Medium
266 Palindrome Permutation 57.5% Easy
249 Group Shifted Strings 42.7% Medium
246 Strobogrammatic Number 40.0% Easy
244 Shortest Word Distance II 39.5% Medium
242 Valid Anagram 46.9% Easy
219 Contains Duplicate II 32.7% Easy
217 Contains Duplicate 46.3% Easy
205 Isomorphic Strings 34.3% Easy
204 Count Primes 26.6% Easy
202 Happy Number 41.1% Easy
187 Repeated DNA Sequences 32.2% Medium
170 Two Sum III - Data structure design 25.4% Easy
166 Fraction to Recurring Decimal 17.8% Medium
159 Longest Substring with At Most Two Distinct Characters 41.9% Hard
149 Max Points on a Line 15.2% Hard
138 Copy List with Random Pointer 26.1% Medium
136 Single Number 54.9% Easy
94 Binary Tree Inorder Traversal 47.8% Medium
85 Maximal Rectangle 28.8% Hard
76 Minimum Window Substring 26.1% Hard
49 Group Anagrams 36.4% Medium
37 Sudoku Solver 31.0% Hard
36 Valid Sudoku 36.5% Medium
30 Substring with Concatenation of All Words 22.1% Hard
18 4Sum 27.1% Medium
3 Longest Substring Without Repeating Characters 24.5% Medium
1 Two Sum 36.1% Easy