Sorting and Searching
These problems deal with sorting or searching in a sorted structure.
We recommend: Median of Two Sorted Arrays. Hands down one of the best interview questions.
Wiggle Sort II
Kth Smallest Element in a Sorted Matrix
Median of Two Sorted Arrays
leetcode.com/problems/wiggle-sort-ii/
leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/solution/
leetcode.com/problems/median-of-two-sorted-arrays/solution/