2020年6月

6月7日

518. Coin Change 2 (DP) (Medium)
1472. Design Browser History(Design) (Medium)
1471. The k Strongest Values in an Array(Priority Queue) (Medium)
1470. Shuffle the Array (Two Pointers) (Easy)

6月8日

231. Power of Two (Bit manipulation) (Easy)
528. Random Pick with Weight (Math) (Medium)

6月9日

392.Is Subsequence (Two_Pointer/DP/Greedy) (Easy) (Unresolved)

6月10日

35. Search Insert Position (Two_Pointer/Binary_Search) (Easy)

6月11日

75. Sort Colors (Sort/Two_Pointer) (Medium) (Unresolved)

6月12日

380. Insert Delete GetRandom O(1) (Design) (Medium) (Unresolved)

6月13日

1480. Running Sum of 1d Array (Array) (Prefix Sum) (Easy)
1481. Least Number of Unique Integers after K Removal (Binary Search) (Hashtable) (Medium)(Unresolved)
368. Largest Divisible Subset (DP) (Math) (Medium) (Unresolved)

6月14日

787. Cheapest Flights Within K Stops (Graph) (Dijkstra/Bellman-Ford) (Shortest Path) (Medium) (Unresolved)

6月15日

700. Search in a Binary Search Tree (Tree) (Shortest Path) (Easy)

6月16日

468. Validate IP Address (Divide & Conquer) (Regular Expression) (Medium)

6月17日

130. Surrounded Regions (DFS/BFS) (Shortest Path) (Medium) (Unresolved)

6月18日

275. H-Index II (Tree) (Binary Search) (Medium) (Unresolved)

6月19日

1044. Longest Duplicate Substring (Binary Search) (Rabin-Karp) (Hard) (Unresolved)

6月20日

60. Permutation Sequence (Math) (Back-tracking) (Medium) (Unresolved)

6月21日

1486. XOR Operation in an Array (Bit) (Easy) (Unresolved)
1487. Making File Names Unique (Medium) (Unresolved)
1488. Avoid Flood in The City (TreeSet) (Medium) (Unresolved)
174. Dungeon Game (DP) (Back-tracking) (Hard) (Unresolved)

6月22日

137. Single Number II (Bit) (HashMap) (Medium) (Unresolved)

6月23日

222. Count Complete Tree Nodes (Tree) (Binary Search) (Medium)

6月24日

96. Unique Binary Search Trees (DP) (Tree) (Medium)

6月25日

287. Find the Duplicate Number (Binary Seach) (Cycle Detection in LinkedList) (Floyd's tortoise and hare) (Medium) (Unresolved)