Anuj

Aspiring student passionate about politics,current affairs & ♟. Constantly learning and exploring new ideas. Join me in dissecting the trends shaping our world.

[Anuj @RamanujT080]

This summer, I’m focusing more on learning and consistency 🚀

Just joined the Summer SkillUp 2026 initiative by @GeeksforGeeks. Looking forward to exploring new tech domains, improving my skills, and making the most of this opportunity.
#SkillUpWithGFG #AIWithGFG #SummerSkillUp

[Anuj @RamanujT080]

Day 24 — POTD

Three sorted arrays today.

Went with three pointers instead of anything fancy.
Move the smallest, match when all align.
Clean logic once it clicks.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

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Redeem → Profile > GFG Connect > Wallet

💡 Use for mentor guidance (coding, placements)

@geeksforgeeks

#coding #students #gfg

[Anuj @RamanujT080]

Day 23 — POTD

Stack + collision logic today.

Initially handled only one case of opposite signs and failed a test case. Fixed it by checking all opposite sign scenarios.

Small condition, big difference.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 22 — POTD

Counted buildings that can see sunlight.

Just tracked the tallest so far while moving left to right.
If current ≥ max till now → visible.
Simple pattern, clean logic.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 21 — POTD

Tried splitting array into two equal-sum parts.

Key check: total sum must be even, then look for a prefix hitting half.

Simple idea, but easy to miss at first.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 20 — POTD

Range mean queries today.

Doing sum every time felt slow, so used prefix sums.
Made each query constant time.
Small idea, big difference.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 19 — POTD

Water Jug problem today.

Had the logic right, but missed a simple edge case (when target equals one jug). Fixed it after a failed test case.

Good reminder: sometimes the bug isn’t in logic, it’s in what you didn’t check.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 18 — POTD

Worked on derangements today.

At first it looked like permutations, but the recurrence made it manageable.
D(n) = (n-1)(D(n-1) + D(n-2)).
Nice mix of math + DP.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 17 — POTD

Checked if one number is a power of another.

Just kept dividing instead of overthinking it.
If it reaches 1 cleanly, it works.
Simple idea, but easy to miss at first.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day — 16 POTD

Flip 0s and 1s problem.

Turned it into a max subarray problem by treating 0 as +1 and 1 as -1.
Kadane’s made it click.
@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 15 — POTD

Palindrome rearrangement today.

Didn’t need to actually build it, just checked counts.
If more than one character has odd frequency → not possible.
Nice little logic check.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 14 — POTD

Tried implementing atoi today (string → integer without using built-ins).

Handling spaces, signs, and especially overflow took more thought than I expected. One small miss and the whole logic breaks.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 13 — POTD

Replaced spaces with %20 in a string.

Simple traversal, but a good reminder to handle string operations carefully.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 12 — POTD

Today’s one was simple, just removing spaces from a string.

Nothing complex, but yeah… consistency going on.

@GeeksforGeeks #POTD #DSA #100DaysOfCode

[Anuj @RamanujT080]

Day 11 of POTD 🚀

Solved Next Smallest Palindrome problem

Key idea: mirror the number, and if not greater → increment middle & handle carry

Tricky edge cases made it interesting 💻

@GeeksforGeeks

#POTD #DSA #coding #100DaysOfCode

[Anuj @RamanujT080]

Day 10 of POTD 🚀

Solved Toeplitz Matrix.

Key idea: each element should match its top-left diagonal neighbor.

Simple traversal, clean logic 💻

@GeeksforGeeks

#POTD #DSA #coding #100DaysOfCode

[Anuj @RamanujT080]

Day 9 of POTD 🚀

Solved Count Strictly Increasing Subarrays.

Instead of checking all subarrays, tracked increasing streaks and used n(n-1)/2.

Key idea: count patterns, not brute force.

@GeeksforGeeks

#POTD #DSA #coding #100DaysOfCode

[Anuj @RamanujT080]

Day 8 of POTD 🚀

Solved Increasing Subsequence of size 3.

Used prefix min and suffix max to optimize from brute force.

Key idea: find arr[i] < arr[j] < arr[k] efficiently in O(n).

@GeeksforGeeks

#POTD #DSA #coding #100DaysOfCode

[Anuj @RamanujT080]

Day 7 of POTD 🚀

Solved Intersection of Two Sorted Arrays.

Used two pointers to traverse both arrays efficiently and handled duplicates carefully.

Key idea: sorted arrays + pointer movement = optimal solution.

@GeeksforGeeks

#POTD #DSA #coding #100DaysOfCode