Advent of Code: 2025

• Day 01
  • Part 1 [Python]
  • Part 2 [Python]
• Day 02
  • Part 1 [Python]
  • Part 2 [Python]
• Day 03
  • Part 1 [Python]
  • Part 2 [Python]
• Day 04
  • Part 1 [Python]
  • Part 2 [Python]
• Day 05
  • Part 1 [Python]
  • Part 2 [Python]
• Day 06
  • Part 1 [Python]
  • Part 2 [Python]
• Day 07
  • Part 1 [Python]
  • Part 2 [Python]
• Day 08
  • Part 1 [Python]
  • Part 2 [Python]

Leetcode: C / C++

Title	Difficulty	Language	Runtime (ms)	Runtime (%)	Memory (MB)	Memory (%)
0001. Two Sum	Easy	C++	4	61.5	14.77	47.9
0017. Letter Combination of a Phone Number	Medium	C	0	100	8.34	36.1
0049. Group Anagrams	Medium	C++	78	7.2	31.1	15.9
0056. Merge Intervals	Medium	C++	3	90.0	23.9	34.7
0104. Maximum Depth of Binary Tree	Easy	C	0	100	11.37	30.7
0121. Best Time to Buy and Sell Stock	Easy	C++	0	100	97.35	60.8
0136. Single Number	Easy	C	3	19.8	9.33	38.1
0151. Reverse Words in a String	Medium	C	0	100	8.59	45.1
0162. Find Peak Element	Medium	C	0	100	8.02	32.2
0200. Number of Islands	Medium	C++	26	65.3	16.17	89.3
0217. Contains Duplicate	Easy	C++	16	95.1	61.33	74.2
0238. Product of Array Except Self	Medium	C	4	23.5	32.39	6.9
0238. Valid Anagram	Easy	C++	7	22.1	9.55	90.1
0283. Move Zeroes	Easy	C	0	100	19.68	33.6
0328. Odd Even Linked List	Medium	C	0	100	11.46	25.2
0334. Increasing Triplet Subsequence	Medium	C	4	21.1	26.24	24.6
0338. Counting Bits	Easy	C	0	100	15.2	19.6
0345. Reverse Vowels of a String	Easy	C	0	100	8.86	55.8
0347. Top K Frequent Elements	Medium	C++	0	100	20.00	5.8
0374. Guess Number Higher or Lower	Easy	C	0	100	7.73	32.1
0387. First Unique Character in a String	Easy	C	3	76.4	9.79	47.3
0443. String Compression	Medium	C++	0	100	12.74	95.5
0547. Number of Provinces	Medium	C	0	100	11.39	79.0
0572. Subtree of Another Tree	Easy	C++	3	30.0	28.83	82.5
0605. Can Place Flowers	Easy	C	0	100	9.35	34.1
0643. Maximum Average Subarray 1	Easy	C	0	100	16.36	36.8
0700. Search in a Binary Search Tree	Easy	C	0	100	18.95	9.1
0746. Min Cost Climbing Stairs	Easy	C	0	100	8.42	20.9
0841. Keys and Rooms	Medium	C	0	100	9.89	77.0
0872. Leaf-Similar Trees	Easy	C	0	100	9.46	14.4
0973. K Closest Points to Origin	Medium	C++	33	75.6	61.67	95.2
1137. N-th Tribonacci Number	Easy	C	0	100	7.88	16.4
1176. Diet Plan Performance	Easy	C++	0	100	27.02	10.1
1318. Minimum Flips to Make a OR b Equal to c	Medium	C	0	100	7.75	24.0
1372. Longest ZigZag Path in a Binary Tree	Medium	C	0	100	57.8	8.1
1431. Kids With the Greatest Number of Candies	Easy	C	0	100	9.67	36.7
1456. Maximum Number of Vowels in a Substring of Given Length	Medium	C	4	64.0	9.32	41.1
1492. The kth Factor of n	Medium	C	0	100	7.9	63.0
1493. Longest Subarray of 1's After Deleting One Element	Medium	C	0	100	13.52	24.8
1710. Maximum Units on a Truck	Easy	C++	8	39.5	20.92	28.1
1726. Tuple with same product	Medium	C++	307	71.8	84.89	81.7
1732. Find the Highest Altitude	Easy	C	0	100	8.21	21.6
1768. Merge Strings Alternately	Easy	C	0	100	8.09	31.9
2268. Minimum Number of Keypresses	Medium	C++	0	100	12.24	12.0
2340. Minimum Adjacent Swaps to Make a Valid Array	Medium	C++	0	100	53.71	67.8
2357. Make Array Zero by Subtracting Equal Amounts	Easy	C	0	100	10.94	71.3
2390. Removing stars from a string	Medium	C++	12	87.1	26.70	89.1
2405. Optimal Partition of String	Medium	C++	0	100	13.14	65.6

Currently working on "Leetcode 75" list of problems:

• Array / Strings (8/9)
  • [Easy] 1768. Merge Strings Alternately
  • [Easy] 1431. Kids With the Greatest Number of Candies
  • [Easy] 0605. Can Place Flowers
  • [Easy] 0345. Reverse Vowels of a String
  • [Medium] 0151. Reverse Words in a String
  • [Medium] 0238. Product of Array Except Self
  • [Medium] 0334. Increasing Triplet Subsequence
  • [Medium] 0443. String Compression
• Two Pointers (1/4)
  • [Easy] 0283. Move Zeroes
• Sliding Window (3/4)
  • [Easy] 0643. Maximum Average Subarray 1
  • [Medium] 1456. Maximum Number of Vowels in a Substring of Given Length
  • [Medium] 1493. Longest Subarray of 1's After Deleting One Element
• Prefix Sum (1/2)
  • [Easy] 1732. Find the Highest Altitude
• Stack (1/3)
  • [Medium] 2390. Removing stars from a string
• Linked List (1/4)
  • [Medium] 0328. Odd Even Linked List
• Binary Tree - DFS (3/6)
  • [Easy] 0104. Maximum Depth of Binary Tree
  • [Easy] 0872. Leaf-Similar Trees
  • [Medium] 1372. Longest ZigZag Path in a Binary Tree
• Binary Search Tree (1/2)
  • [Easy] 0700. Search in a Binary Search Tree
• Graph - DFS (2/4)
  • [Medium] 0841. Keys and Rooms
  • [Medium] 0547. Number of Provinces
• Binary Search (2/4)
  • [Easy] 0374. Guess Number Higher or Lower
  • [Medium] 0162. Find Peak Element
• Backtracking (1/2)
  • [Medium] 0017. Letter Combination of a Phone Number
• DP - 1D (2/4)
  • [Easy] 1137. N-th Tribonacci Number
  • [Easy] 0746. Min Cost Climbing Stairs
• Bit Manipulation (3/3)
  • [Easy] 0338. Counting Bits
  • [Easy] 0136. Single Number
  • [Medium] 1318. Minimum Flips to Make a OR b Equal to c

Currently working on "NeetCode 150" list of problems:

• Arrays and Hashing (5/9)
  • [Easy] 0217. Contains Duplicate
  • [Easy] 0242. Valid Anagram
  • [Easy] 0001. Two Sum
  • [Medium] 0049. Group Anagrams
  • [Medium] 0347. Top K Frequent Elements

LeetCode: JavaScript / TypeScript

Title	Difficulty	Language	Runtime (ms)	Runtime (%)	Memory (MB)	Memory (%)
2667. Create Hello World Function	Easy	TypeScript	53	69.2	51.43	7.0
2620. Counter	Easy	TypeScript	56	58.9	51.52	18.4
2604. To Be or Not To Be	Easy	TypeScript	51	85.7	51.54	11.8
2665. Counter 1	Easy	TypeScript	56	89.9	52.41	23.6
2635. Apply Transform Over Each Element in Array	Easy	TypeScript	55	66.6	51.78	5.3
2634. Filter Elements from Array	Easy	TypeScript	55	75.2	51.60	54.1

Currently working on "30 Days of JavaScript" list of problems:

• Closures (4/4)
  • [Easy] 2667. Create Hello World Function
  • [Easy] 2620. Counter
  • [Easy] 2604. To Be or Not To Be
  • [Easy] 2665. Counter 1
• Basic Array Transformations (2/3)
  • [Easy] 2635. Apply Transform Over Each Element in Array
  • [Easy] 2634. Filter Elements from Array