Problem-solving & write-ups · Python3

234. Palindrome Linked List

82. Remove Duplicates From Sorted List Ii

Min Stack

706. Design Hashmap

Intersection Of Two Linked Lists

69. Sqrtx

Min Cost Climbing Stairs

Number Of Islands

547. Number Of Provinces

21. Merge Two Sorted Lists

19. Remove Nth Node From End Of List

9. Palindrome Number

2. Add Two Numbers

Valid Parentheses

1. Two Sum

Instead of learning solutions of LeetCode questions, understand patterns!

Instead of learning solutions of LeetCode questions, understand patterns!

DoublyLinkedList Design (with bidirectional search to perform faster)

Node.next - Value - Node.prev Actions: addAtHead, addAtTail, get, deleteAt, addAtIndex

CTCI 1.4 Palindrome Permutation

CTCI 1.6 String Compression

Count the chars using loop