leetcode

2021년 2월 9일시작.

2월의 목표 : Introduction 문제 풀기, 2월 challenge 다 풀기.

3월까지의 60문제 품.

3월 1주차 contest 참여 - 영어 문제 해석 잘 못해서 retire..

3월부터의 목표 : March challenge Clear, 하루 3문제씩 총 140문제 풀기

3.24 목표달성 148문제

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4월의 목표 : 230문제

실패

이유 :
4월에 공채가 너무 많이 떠서 바쁘고 정신이 없었다.

최종면접까지도 간 것이 있기 때문에..

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5월 목표 : 300문제

복습 해야할 것(python으로 다시 풀 것)

출처 : https://www.teamblind.com/post/New-Year-Gift---Curated-List-of-Top-75-LeetCode-Questions-to-Save-Your-Time-OaM1orEU

Array

- Two Sum - https://leetcode.com/problems/two-sum/ 5.12

- Best Time to Buy and Sell Stock - https://leetcode.com/problems/best-time-to-buy-and-sell-stock/ 5.15

- Contains Duplicate - https://leetcode.com/problems/contains-duplicate/ 5.15

- Product of Array Except Self - https://leetcode.com/problems/product-of-array-except-self/ 5.19

- Maximum Subarray - https://leetcode.com/problems/maximum-subarray/ 5.20

- Maximum Product Subarray - https://leetcode.com/problems/maximum-product-subarray/ 5.21 ★

- Find Minimum in Rotated Sorted Array - https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/ 5.24

- Search in Rotated Sorted Array - https://leetcode.com/problems/search-in-rotated-sorted-array/ 5.25

- 3Sum - https://leetcode.com/problems/3sum/ 6.01 ★

• Container With Most Water - https://leetcode.com/problems/container-with-most-water/

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Binary

- Sum of Two Integers - https://leetcode.com/problems/sum-of-two-integers/ 6.04 bit연산인데 어려움. 다시 확인 필수!!

• Number of 1 Bits - https://leetcode.com/problems/number-of-1-bits/
• Counting Bits - https://leetcode.com/problems/counting-bits/
• Missing Number - https://leetcode.com/problems/missing-number/
• Reverse Bits - https://leetcode.com/problems/reverse-bits/

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Dynamic Programming

• Climbing Stairs - https://leetcode.com/problems/climbing-stairs/
• Coin Change - https://leetcode.com/problems/coin-change/
• Longest Increasing Subsequence - https://leetcode.com/problems/longest-increasing-subsequence/
• Longest Common Subsequence -
• Word Break Problem - https://leetcode.com/problems/word-break/
• Combination Sum - https://leetcode.com/problems/combination-sum-iv/
• House Robber - https://leetcode.com/problems/house-robber/
• House Robber II - https://leetcode.com/problems/house-robber-ii/
• Decode Ways - https://leetcode.com/problems/decode-ways/
• Unique Paths - https://leetcode.com/problems/unique-paths/
• Jump Game - https://leetcode.com/problems/jump-game/

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Graph

• Clone Graph - https://leetcode.com/problems/clone-graph/
• Course Schedule - https://leetcode.com/problems/course-schedule/
• Pacific Atlantic Water Flow - https://leetcode.com/problems/pacific-atlantic-water-flow/
• Number of Islands - https://leetcode.com/problems/number-of-islands/
• Longest Consecutive Sequence - https://leetcode.com/problems/longest-consecutive-sequence/
• Alien Dictionary (Leetcode Premium) - https://leetcode.com/problems/alien-dictionary/
• Graph Valid Tree (Leetcode Premium) - https://leetcode.com/problems/graph-valid-tree/
• Number of Connected Components in an Undirected Graph (Leetcode Premium) - https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/

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Interval

• Insert Interval - https://leetcode.com/problems/insert-interval/
• Merge Intervals - https://leetcode.com/problems/merge-intervals/
• Non-overlapping Intervals - https://leetcode.com/problems/non-overlapping-intervals/
• Meeting Rooms (Leetcode Premium) - https://leetcode.com/problems/meeting-rooms/
• Meeting Rooms II (Leetcode Premium) - https://leetcode.com/problems/meeting-rooms-ii/

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Linked List

• Reverse a Linked List - https://leetcode.com/problems/reverse-linked-list/
• Detect Cycle in a Linked List - https://leetcode.com/problems/linked-list-cycle/
• Merge Two Sorted Lists - https://leetcode.com/problems/merge-two-sorted-lists/
• Merge K Sorted Lists - https://leetcode.com/problems/merge-k-sorted-lists/
• Remove Nth Node From End Of List - https://leetcode.com/problems/remove-nth-node-from-end-of-list/
• Reorder List - https://leetcode.com/problems/reorder-list/

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Matrix

• Set Matrix Zeroes - https://leetcode.com/problems/set-matrix-zeroes/
• Spiral Matrix - https://leetcode.com/problems/spiral-matrix/
• Rotate Image - https://leetcode.com/problems/rotate-image/
• Word Search - https://leetcode.com/problems/word-search/

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String

• Longest Substring Without Repeating Characters - https://leetcode.com/problems/longest-substring-without-repeating-characters/
• Longest Repeating Character Replacement - https://leetcode.com/problems/longest-repeating-character-replacement/
• Minimum Window Substring - https://leetcode.com/problems/minimum-window-substring/
• Valid Anagram - https://leetcode.com/problems/valid-anagram/
• Group Anagrams - https://leetcode.com/problems/group-anagrams/
• Valid Parentheses - https://leetcode.com/problems/valid-parentheses/
• Valid Palindrome - https://leetcode.com/problems/valid-palindrome/
• Longest Palindromic Substring - https://leetcode.com/problems/longest-palindromic-substring/
• Palindromic Substrings - https://leetcode.com/problems/palindromic-substrings/
• Encode and Decode Strings (Leetcode Premium) - https://leetcode.com/problems/encode-and-decode-strings/

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Tree

• Maximum Depth of Binary Tree - https://leetcode.com/problems/maximum-depth-of-binary-tree/
• Same Tree - https://leetcode.com/problems/same-tree/
• Invert/Flip Binary Tree - https://leetcode.com/problems/invert-binary-tree/
• Binary Tree Maximum Path Sum - https://leetcode.com/problems/binary-tree-maximum-path-sum/
• Binary Tree Level Order Traversal - https://leetcode.com/problems/binary-tree-level-order-traversal/
• Serialize and Deserialize Binary Tree - https://leetcode.com/problems/serialize-and-deserialize-binary-tree/
• Subtree of Another Tree - https://leetcode.com/problems/subtree-of-another-tree/
• Construct Binary Tree from Preorder and Inorder Traversal - https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/
• Validate Binary Search Tree - https://leetcode.com/problems/validate-binary-search-tree/
• Kth Smallest Element in a BST - https://leetcode.com/problems/kth-smallest-element-in-a-bst/
• Lowest Common Ancestor of BST - https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/
• Implement Trie (Prefix Tree) - https://leetcode.com/problems/implement-trie-prefix-tree/
• Add and Search Word - https://leetcode.com/problems/add-and-search-word-data-structure-design/
• Word Search II - https://leetcode.com/problems/word-search-ii/

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Heap

• Merge K Sorted Lists - https://leetcode.com/problems/merge-k-sorted-lists/
• Top K Frequent Elements - https://leetcode.com/problems/top-k-frequent-elements/
• Find Median from Data Stream - https://leetcode.com/problems/find-median-from-data-stream/