Hi Everyone! My name is Ken. I used to work for Amazon.

Let's solve the interview questions by using LeetCode. I'll explain how to solve the question and write codes with drawing charts or pictures. I believe that this channel helps you prepare for your coming technical interviews as a software engineer!

Feel free to ask me if you have any questions or you don't understand what I say in the videos. Your comments and requests are always more than welcome!

As of Dec 31 2022, I work as a software engineer for a startup company and focus on mobile application and backend.

Nested Loops Explained: O(n) vs O(n²) Time Complexity
11:33
Nested Loops Explained: O(n) vs O(n²) Time Complexity
Can You Split Arrays Into Equal Sums? Learn This Algorithm!
9:08
Can You Split Arrays Into Equal Sums? Learn This Algorithm!
The Most Common Coding Interview Question SOLVED!
41:56
The Most Common Coding Interview Question SOLVED!
Master Anagrams in Python With This Simple Trick!
29:48
Master Anagrams in Python With This Simple Trick!
Cracking LeetCode 236: Lowest Common Ancestor of a Binary Tree Made Easy
8:43
Cracking LeetCode 236: Lowest Common Ancestor of a Binary Tree Made Easy
Master the Sliding Window Technique: 4 Must-Know Problems Explained
1:01:18
Master the Sliding Window Technique: 4 Must-Know Problems Explained
Master Lowest Common Ancestor of a Binary Search Tree in 6 Minutes GUARANTEED!
6:26
Master Lowest Common Ancestor of a Binary Search Tree in 6 Minutes GUARANTEED!
Top 5 Must-Solve Linked List Problems on LeetCode (Merge, Reverse, Cycle Detection & More!)
29:20
Top 5 Must-Solve Linked List Problems on LeetCode (Merge, Reverse, Cycle Detection & More!)
Cracking LeetCode 215: Kth Largest Element in an Array Made Easy
24:02
Cracking LeetCode 215: Kth Largest Element in an Array Made Easy
Master Dynamic Programming | 5 Key Problems for Coding Interviews
1:05:56
Master Dynamic Programming | 5 Key Problems for Coding Interviews
Subarray Sum Equals K | Intuitive Explanation + Code (LeetCode 560)
9:15
Subarray Sum Equals K | Intuitive Explanation + Code (LeetCode 560)
LeetCode 125: Mastering Valid Palindrome
8:06
LeetCode 125: Mastering Valid Palindrome
Greatest Common Divisor of Strings | LeetCode 1071 Solution
10:27
Greatest Common Divisor of Strings | LeetCode 1071 Solution
Learn the Two Pointer Technique | Step-by-Step Problem Solutions
40:15
Learn the Two Pointer Technique | Step-by-Step Problem Solutions
Understanding LRU Cache | LeetCode 146 Solution Explained
17:54
Understanding LRU Cache | LeetCode 146 Solution Explained
LeetCode 160: Intersection of Two Linked Lists | Step-by-Step Solution Explained
5:58
LeetCode 160: Intersection of Two Linked Lists | Step-by-Step Solution Explained
LeetCode Easy-Medium Questions! - From easy to the next level.
45:14
LeetCode Easy-Medium Questions! - From easy to the next level.
Linked List Cycle II - LeetCode 142 - 3 solutions - Python, JavaScript, Java, C++
10:55
Linked List Cycle II - LeetCode 142 - 3 solutions - Python, JavaScript, Java, C++
Add Binary - LeetCode 67 - Python, JavaScript, Java, C++
9:50
Add Binary - LeetCode 67 - Python, JavaScript, Java, C++
Unique Binary Search Trees - LeetCode 96 - Python, JavaScript, Java, C++
13:52
Unique Binary Search Trees - LeetCode 96 - Python, JavaScript, Java, C++
Integer to Roman - LeetCode 12 - Python, JavaScript, Java, C++
13:26
Integer to Roman - LeetCode 12 - Python, JavaScript, Java, C++
LeetCode Feeling Tough? Start Here with 10 Essentials to Tackle First!
1:03:51
LeetCode Feeling Tough? Start Here with 10 Essentials to Tackle First!
Contains Duplicate II - LeetCode 219 - Python, JavaScript, Java, C++
13:30
Contains Duplicate II - LeetCode 219 - Python, JavaScript, Java, C++
Gas Station - LeetCode 134 - Python, JavaScript, Java, C++
16:42
Gas Station - LeetCode 134 - Python, JavaScript, Java, C++
Insert Interval - LeetCode 57 - Python, JavaScript, Java, C++
21:04
Insert Interval - LeetCode 57 - Python, JavaScript, Java, C++
Set Matrix Zeroes - LeetCode 73 - Python, JavaScript, Java, C++
11:09
Set Matrix Zeroes - LeetCode 73 - Python, JavaScript, Java, C++
H-Index - LeetCode #274 - Python, JavaScript, Java, C++
13:13
H-Index - LeetCode #274 - Python, JavaScript, Java, C++
Master the Minimum Size Subarray Sum Problem in 12 Minutes!
12:49
Master the Minimum Size Subarray Sum Problem in 12 Minutes!
Isomorphic Strings - LeetCode #205 - Python, JavaScript, Java, C++
17:50
Isomorphic Strings - LeetCode #205 - Python, JavaScript, Java, C++
Find Peak Element - LeetCode #162 - Python, JavaScript, Java, C++
9:23
Find Peak Element - LeetCode #162 - Python, JavaScript, Java, C++