179. Largest Number
When we customized a comparator, it won’t follow the simple descending order but compares two of the concatenations of the strings.
LeetCode
155. Min Stack
Using customized Linked List to solve this problem
295. Find Median From Data Stream
Using two heaps to find the median from data stream
20. Valid Parentheses
No summary
203. Remove Linked List Elements
No summary
160. Intersection of Two Linked Lists
No summary
4. Median of Two Sorted Arrays
This post gives two versions of a solution.
268. Missing Number
No summary
287. Find the Duplicate Number
Fast & Slow Pointers and Binary Search Solutions
43. Multiply Strings
We solved this problem by simulating vertical multiplication which factoring the multiplier into coefficient and exponent.