M Umair Ullah

Solving DSA, Crafting Code, and Contributing to the Future.

Multan, Pakistan. Joined on Aug 13, 2024

Pronouns

study nerd

M Umair Ullah

Sep 4 '25

🔥 “Stack Explained: The Secret Weapon Behind LeetCode Monotonic Problems”

#dsa #programming #cpp #algorithms

3 min read

M Umair Ullah

Aug 23 '25

🔑 “Mastering Strings in Competitive Programming: Algorithms, Challenges & Solutions”

#dsa #cpp #programming #stringalgo

3 min read

M Umair Ullah

Aug 12 '25

Binary Search on Answers — Crack the Hardest Problems in Log Time

#programming #dsa #cpp #algorithms

3 min read

M Umair Ullah

Aug 3 '25

The Logic Behind 0s, 1s, and 2s (DNF)

#programming #dsa #productivity #dutchflag

3 min read

M Umair Ullah

Aug 2 '25

What I Wish I Knew Before Learning the Two Pointer Algorithm

#dsa #programming #cpp #2pointers

3 min read

M Umair Ullah

Jul 31 '25

From Brute Force to Kadane’s: Solving the Maximum Subarray Problem Efficiently

#dsa #programming #productivity #kadanealgo

2 min read

M Umair Ullah

Jul 29 '25

🧠 Sliding Window Pattern: The Secret Sauce for Efficient Algorithms

#dsa #programming #cpp #slidingwindow

2 min read

M Umair Ullah

Jul 29 '25

⏱️ O(N) to O(1): How Prefix Sum Will Change Your Code Forever

#dsa #cpp #programming #prefixsum

2 min read

M Umair Ullah

Jul 25 '25

Maximum sum rectangle in a 2D matrix.

#cpp #dsa #programming #productivity

2 min read

M Umair Ullah

Jul 25 '25

LC:370 Range Addition.

#programming #cpp #dsa #productivity

2 min read

M Umair Ullah

Jul 21 '25

Subarray Sum Divisible By K.

#dsa #cpp #programming #productivity

2 min read

M Umair Ullah

Jul 21 '25

Max Consecutive Ones III

#dsa #programming #cpp #productivity

2 min read

M Umair Ullah

Jul 21 '25

525.Contiguous Array.

#dsa #programming #cpp #beginners

2 min read

DEV Community

M Umair Ullah

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Writing Debut

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🔥 “Stack Explained: The Secret Weapon Behind LeetCode Monotonic Problems”

🔑 “Mastering Strings in Competitive Programming: Algorithms, Challenges & Solutions”

Binary Search on Answers — Crack the Hardest Problems in Log Time

The Logic Behind 0s, 1s, and 2s (DNF)

What I Wish I Knew Before Learning the Two Pointer Algorithm

From Brute Force to Kadane’s: Solving the Maximum Subarray Problem Efficiently

🧠 Sliding Window Pattern: The Secret Sauce for Efficient Algorithms

⏱️ O(N) to O(1): How Prefix Sum Will Change Your Code Forever

Maximum sum rectangle in a 2D matrix.

LC:370 Range Addition.

Subarray Sum Divisible By K.

Max Consecutive Ones III

525.Contiguous Array.