Tag: Divide and Conquer
4. Median of Two Sorted Arrays
23. Merge k Sorted Lists
53. Maximum Subarray
169. Majority Element
215. Kth Largest Element in an Array
240. Search a 2D Matrix II
427. Construct Quad Tree
558. Logical OR of Two Binary Grids Represented as Quad-Trees
889. Construct Binary Tree from Preorder and Postorder Traversal
973. K Closest Points to Origin