LeetCode 149: Max Points on a Line
Find the maximum number of points lying on the same straight line using slope counting and normalization.
Tag
Hard
5 notes
LeetCode 140: Word Break II
Return all valid sentences formed by inserting spaces into a string so every word belongs to the dictionary, using DFS with memoization.
LeetCode 135: Candy
Compute the minimum candies needed using two greedy passes, one from the left and one from the right.
LeetCode 132: Palindrome Partitioning II
Find the minimum number of cuts needed to split a string into palindromic substrings using palindrome precomputation and dynamic programming.
LeetCode 126: Word Ladder II
Find all shortest word transformation sequences using BFS to build shortest-path parents, then backtracking to reconstruct every answer.