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Interview Prep! All the important need-to-know python solutions and explanations for the most asked interview questions!
#leetcode #interviewquestions #python #crackingthecode #stem

Subtree of Another Tree - LeetCode 572 - Python #leetcode #blind75 #binarytree #subtreeofanothertree

Subtree of Another Tree - LeetCode 572 - Python #leetcode #blind75 #binarytree #subtreeofanothertree

Longest Common Subsequence - LeetCode 1143 - Python #dynamicprogramming #leetcode #blind75

Longest Common Subsequence - LeetCode 1143 - Python #dynamicprogramming #leetcode #blind75

Clone Graph - LeetCode 133 - Python #blind75 #leetcode #clonegraph

Clone Graph - LeetCode 133 - Python #blind75 #leetcode #clonegraph

Spiral Matrix - LeetCode 54 - Python #blind75 #leetcode #spiralmatrix

Spiral Matrix - LeetCode 54 - Python #blind75 #leetcode #spiralmatrix

Same Tree - LeetCode 100 - Python #blind75 #leetcode

Same Tree - LeetCode 100 - Python #blind75 #leetcode

Linked List Cycle - LeetCode 141 - Python #blind75 #leetcode

Linked List Cycle - LeetCode 141 - Python #blind75 #leetcode

Insert Interval - LeetCode 57 - Python #blind75 #leetcode

Insert Interval - LeetCode 57 - Python #blind75 #leetcode

Decode Ways - LeetCode 91 - Python

Decode Ways - LeetCode 91 - Python

Merge Two Sorted Lists - LeetCode 21 - Python

Merge Two Sorted Lists - LeetCode 21 - Python

House Robber II - LeetCode 213 - Python (Dynamic Programming)

House Robber II - LeetCode 213 - Python (Dynamic Programming)

Longest Increasing Subsequence - LeetCode 300 - Python - O(nlog(n))

Longest Increasing Subsequence - LeetCode 300 - Python - O(nlog(n))

Search in Rotated Sorted Array - LeetCode 33 - Python

Search in Rotated Sorted Array - LeetCode 33 - Python

Counting Bits - LeetCode 338 - Python - Dynamic Programming! (Bit Shift Solution)

Counting Bits - LeetCode 338 - Python - Dynamic Programming! (Bit Shift Solution)

Number of 1 Bits - LeetCode 191 - Python

Number of 1 Bits - LeetCode 191 - Python

Reverse Bits - LeetCode 190 - Python

Reverse Bits - LeetCode 190 - Python

Maximum Product Subarray - LeetCode 152 - Python (Dynamic Programming)

Maximum Product Subarray - LeetCode 152 - Python (Dynamic Programming)

3Sum - LeetCode 15 - Python

3Sum - LeetCode 15 - Python

Find Minimum in Rotated Sorted Array - LeetCode 153 - Python (Iterative and Recursive!)

Find Minimum in Rotated Sorted Array - LeetCode 153 - Python (Iterative and Recursive!)

Two Sum II - LeetCode 167 - Python

Two Sum II - LeetCode 167 - Python

Is Subsequence - LeetCode 392 - Python

Is Subsequence - LeetCode 392 - Python

Remove Nth Node From End of List - LeetCode 19 - Python (Iterative and Recursive!)

Remove Nth Node From End of List - LeetCode 19 - Python (Iterative and Recursive!)

Reverse Linked List - LeetCode 206 - Python (Iterative and Recursive)

Reverse Linked List - LeetCode 206 - Python (Iterative and Recursive)

Sum of Two Integers - LeetCode 371 - Python

Sum of Two Integers - LeetCode 371 - Python

Rotate Image/Matrix - LeetCode 48 - Python (2 ways!)

Rotate Image/Matrix - LeetCode 48 - Python (2 ways!)

Two Sum - LeetCode 1 - Python (2 Ways!)

Two Sum - LeetCode 1 - Python (2 Ways!)

Lowest Common Ancestor of a Binary Search Tree - LeetCode 235 - Python

Lowest Common Ancestor of a Binary Search Tree - LeetCode 235 - Python

Valid Palindrome - LeetCode 125 - Python

Valid Palindrome - LeetCode 125 - Python

Binary Search - LeetCode 704 - Python

Binary Search - LeetCode 704 - Python

Validate Binary Search Tree - LeetCode 98 - Python

Validate Binary Search Tree - LeetCode 98 - Python

Longest Palindromic Substring - LeetCode 5 - Python

Longest Palindromic Substring - LeetCode 5 - Python

Contains Duplicate - LeetCode 217 - Python

Contains Duplicate - LeetCode 217 - Python

Word Search - LeetCode 79 - Python (BACKTRACKING)

Word Search - LeetCode 79 - Python (BACKTRACKING)

Group Anagrams - LeetCode 49 - Python

Group Anagrams - LeetCode 49 - Python

Valid Anagram - LeetCode 242 - Python

Valid Anagram - LeetCode 242 - Python

Add Two Numbers - LeetCode 2 - Python

Add Two Numbers - LeetCode 2 - Python

Implement Trie (Prefix Tree) - LeetCode 202 - Python

Implement Trie (Prefix Tree) - LeetCode 202 - Python

FizzBuzz - LeetCode 412 - Python

FizzBuzz - LeetCode 412 - Python

Sum of Left Leaves - LeetCode 404 - Python

Sum of Left Leaves - LeetCode 404 - Python

Valid Parentheses - LeetCode 20 - Python

Valid Parentheses - LeetCode 20 - Python

Transpose Matrix - LeetCode 867 - Python

Transpose Matrix - LeetCode 867 - Python

Maximum Subarray - LeetCode 53 - Python

Maximum Subarray - LeetCode 53 - Python

Best Time to Buy and Sell Stock - Leetcode 121 - Python

Best Time to Buy and Sell Stock - Leetcode 121 - Python

Evaluate Reverse Polish Notation - LeetCode 150 - Python

Evaluate Reverse Polish Notation - LeetCode 150 - Python

Min Cost Climbing Stairs - LeetCode 746 - Python

Min Cost Climbing Stairs - LeetCode 746 - Python

Climbing Stairs - LeetCode 70 - Python

Climbing Stairs - LeetCode 70 - Python

Maximum Level Sum of a Binary Tree - LeetCode 1161 - Python (Recursive and Iterative!)

Maximum Level Sum of a Binary Tree - LeetCode 1161 - Python (Recursive and Iterative!)

Missing Number - LeetCode 268 - Python [O(n) time and O(1) space]

Missing Number - LeetCode 268 - Python [O(n) time and O(1) space]

Maximum Depth of Binary Tree - LeetCode 104 - Python

Maximum Depth of Binary Tree - LeetCode 104 - Python

Boats to Save People - LeetCode 881 - Python

Boats to Save People - LeetCode 881 - Python

Maximum Width of Binary Tree - LeetCode 662 - Python

Maximum Width of Binary Tree - LeetCode 662 - Python

Increasing Triplet Subsequence - LeetCode 334 - Python [O(n) time and O(1) space]

Increasing Triplet Subsequence - LeetCode 334 - Python [O(n) time and O(1) space]

Set Matrix Zeroes - LeetCode 73 - Python

Set Matrix Zeroes - LeetCode 73 - Python

House Robber - LeetCode 198 - Python (Dynamic Programming)

House Robber - LeetCode 198 - Python (Dynamic Programming)

Minimum Path Sum - LeetCode 64 Python (Dynamic Programming)

Minimum Path Sum - LeetCode 64 Python (Dynamic Programming)

Maximal Square - LeetCode 221 - Python [O(n) time and O(1) Space!]

Maximal Square - LeetCode 221 - Python [O(n) time and O(1) Space!]

Coin Change - LeetCode 322 - Python (Recursive and Iterative!)

Coin Change - LeetCode 322 - Python (Recursive and Iterative!)

Longest Substring with At Most Two Distinct Characters - LeetCode 159 - Python

Longest Substring with At Most Two Distinct Characters - LeetCode 159 - Python

Meeting Rooms II - LeetCode 253 Python

Meeting Rooms II - LeetCode 253 Python

Meeting Rooms - LeetCode 252 Python

Meeting Rooms - LeetCode 252 Python

Binary Tree Right Side View - LeetCode 199 Python

Binary Tree Right Side View - LeetCode 199 Python

Fruit Into Baskets - LeetCode 904 Python

Fruit Into Baskets - LeetCode 904 Python

Product of Array Except Self - LeetCode 238 Python

Product of Array Except Self - LeetCode 238 Python

Unique Email Addresses - LeetCode 929 Python

Unique Email Addresses - LeetCode 929 Python

Container With Most Water - LeetCode 11 - Python

Container With Most Water - LeetCode 11 - Python

Path Sum II - LeetCode 113 Python

Path Sum II - LeetCode 113 Python

Max Area of Island - LeetCode 695 Python

Max Area of Island - LeetCode 695 Python

Number of Islands - LeetCode 200 Python

Number of Islands - LeetCode 200 Python

Longest Substring Without Repeating Characters - LeetCode 3 Python

Longest Substring Without Repeating Characters - LeetCode 3 Python

Merge Intervals - LeetCode 56 Python

Merge Intervals - LeetCode 56 Python

Binary Tree Zigzag Level Order Traversal - LeetCode 103 Python

Binary Tree Zigzag Level Order Traversal - LeetCode 103 Python

Keys and Rooms - LeetCode 841 Python

Keys and Rooms - LeetCode 841 Python

Binary Tree Level Order Traversal - LeetCode 102 Python

Binary Tree Level Order Traversal - LeetCode 102 Python

Angle Between Hands of a Clock - LeetCode 1344 Python

Angle Between Hands of a Clock - LeetCode 1344 Python

Binary Tree Preorder Traversal - LeetCode 144 Python

Binary Tree Preorder Traversal - LeetCode 144 Python

Binary Tree Inorder Traversal - LeetCode 94 - Python (Recursive and Iterative!)

Binary Tree Inorder Traversal - LeetCode 94 - Python (Recursive and Iterative!)

Jump Game - LeetCode 55 Python

Jump Game - LeetCode 55 Python

Unique Paths (Part 2) - LeetCode 62 Python

Unique Paths (Part 2) - LeetCode 62 Python

Unique Paths - LeetCode 62 Python

Unique Paths - LeetCode 62 Python

Minimum Domino Rotations For Equal Row - LeetCode 1007 - Python [O(n) time, O(1) space!]

Minimum Domino Rotations For Equal Row - LeetCode 1007 - Python [O(n) time, O(1) space!]

Non-overlapping Intervals - LeetCode 435 - Python [O(nlogn) Time and O(1) Space!]

Non-overlapping Intervals - LeetCode 435 - Python [O(nlogn) Time and O(1) Space!]

Next Permutation - LeetCode 31 - Python [O(n) time and O(1) Space!]

Next Permutation - LeetCode 31 - Python [O(n) time and O(1) Space!]

Find All Numbers Disappeared in an Array - LeetCode 448 - Python [O(n) time and O(1) Space!]

Find All Numbers Disappeared in an Array - LeetCode 448 - Python [O(n) time and O(1) Space!]

Find the Difference - LeetCode 389 - Python [O(n) time and O(1) Space!]

Find the Difference - LeetCode 389 - Python [O(n) time and O(1) Space!]

Subsets - LeetCode 78 - Python

Subsets - LeetCode 78 - Python

Sort Colors - LeetCode 75 - Python [O(n) time and O(1) Space!]

Sort Colors - LeetCode 75 - Python [O(n) time and O(1) Space!]

K Closest Points to Origin - LeetCode 973 - Python [O(n) time!]

K Closest Points to Origin - LeetCode 973 - Python [O(n) time!]

Task Scheduler - LeetCode 621 - Python [O(n) time and O(1) Space!]

Task Scheduler - LeetCode 621 - Python [O(n) time and O(1) Space!]

Binary Tree Maximum Path Sum - LeetCode 124 - Python #leetcode #binarytree #blind75 #recursion

Binary Tree Maximum Path Sum - LeetCode 124 - Python #leetcode #binarytree #blind75 #recursion