Tags¶

Following is a list of relevant tags:

BFS¶

• 102 Binary Tree Level Order Traversal ✅
• 1161 Maximum Level Sum of a Binary Tree ✅

MS¶

• 340 Find the longest substring with k unique characters in a given string
• 849 Maximize Distance to Closest Person

Microsoft¶

• 340 Find the longest substring with k unique characters in a given string
• 849 Maximize Distance to Closest Person

array¶

• 1 The sum of two numbers ✅

backtracking¶

• 39 Combination Sum
• 46 Permutations ✅
• 78 Subsets ✅

base conversion¶

• Number to Money ✅
• String Conversion ✅

binary search¶

• 33 Search in Rotated Sorted Array
• 81. Search in Rotated Sorted Array II

bst¶

• 108 Convert Sorted Array to Binary Search
• 230 Kth Smallest Element in a BST
• 450 Delete Node in a BST
• 501 Find Mode in Binary Search Tree
• 530 Minimum Absolute Difference in BST
• 700 Search in a Binary Search Tree
• 701 Insert into a Binary Search Tree
• 98 Validate Binary Search Tree ✅
• 99 Recover Binary Search Tree

cci¶

• Build Order (CCI 4.7) ✅

codesignal¶

• Connection and Device States

dfs¶

• 39 Combination Sum
• 46 Permutations ✅
• 78 Subsets ✅

dp¶

• 300 Longest Increasing Subsequence
• 746 Min Cost Climbing Stairs
• Fibonacci series
• Number of ways from the top-left to the bottom-right in a 2D array ✅

duplicate¶

• 81. Search in Rotated Sorted Array II

dynamic programming¶

• 746 Min Cost Climbing Stairs
• Number of ways from the top-left to the bottom-right in a 2D array ✅

elements¶

• String Conversion ✅

eopi¶

• Number of ways from the top-left to the bottom-right in a 2D array ✅
• String Conversion ✅

grokking¶

• System design Basics

interview¶

• Number to Money ✅

linked list¶

• 141 Linked List Cycle ✅
• 148 Sort List
• 2 Add Two Numbers ✅
• 206 Reverse Linked List
• 21 Merge Two Sorted Lists ✅
• 23 Merge k Sorted Lists ✅
• 24 Swap Nodes in Pairs ✅
• 707 Design Linked List

linked list cycle¶

• 287 Find the Duplicate Number

references¶

• Helpful Resources and links

resources¶

• Helpful Resources and links

rotated¶

• 33 Search in Rotated Sorted Array
• 81. Search in Rotated Sorted Array II

string¶

• 125 Verify palindrome string ✅
• 242 Valid Anagram ✅
• 387 First Unique Character ✅
• Number to Money ✅
• String Conversion ✅

trie¶

• 208 Implement Trie (Prefix Tree)
• 211 Design Add and Search Words Data Structure

two pointers¶

• 287 Find the Duplicate Number

unique¶

• 33 Search in Rotated Sorted Array

window¶

• 209 Minimum Size Subarray Sum
• 340 Find the longest substring with k unique characters in a given string