Ayushi Upadhyay

Full Stack Developer | 🏗️ Scalable Architecture • ⚙️ Distributed Systems • 🤖 AI • 🧠 NLP | Building, scaling, evolving 🌷

[Ayushi Upadhyay @ayushi__ofc]

View my verified achievement from @Celonis. https://t.co/jTBPf2SRxN via @credly

[Ayushi Upadhyay @ayushi__ofc]

Completing #geekstreak60 has been a great learning experience for me. Solving one problem daily helped me stay consistent, improve my problem-solving skills, and build confidence in DSA. Thanks to @NPCI_NPCI and @geeksforgeeks 🚀

#npci #GeeksforGeeks #DSA #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

⚔️ Day 60/60 – #geekstreak60
Solved Opposite Sign Pair Reduction on @geeksforgeeks
✔ Used stack to simulate adjacent reductions
✔ Handled chain reactions efficiently
✔ Achieved optimal O(N) Powered by @NPCI_NPCI
#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

🏢 Day 59/60 – #geekstreak60
Solved Buildings with Sunlight on @geeksforgeeks
✔ Traversed array while tracking maximum height so far
✔ Counted buildings visible from the left side

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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

⚖️ Day 58/60 – #geekstreak60

Solved Two Equal Sum Subarrays on @geeksforgeeks
✔ Used total sum + prefix sum technique
✔ Found valid split point in one pass
✔ Achieved optimal O(N) solution
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

📊 Day 57/60 – #geekstreak60
Solved Mean of Range in Array on @geeksforgeeks
✔ Used Prefix Sum for fast range queries
✔ Computed floor average in O(1) per query
✔ Overall efficient O(N + Q)
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

💧Day 56/60 – #geekstreak60
Solved 2 Water Jug Problem on @geeksforgeeks
✔ Used GCD condition to check possibility
✔ Simulated both pouring directions
✔ Found minimum operations efficiently
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

🔀 Day 55/60 – #geekstreak60

Solved Count Derangements on @geeksforgeeks
✔ Used recurrence relation with DP optimization
✔ Counted permutations with no element in original position
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

⚡Day 54/60 – #geekstreak60
Solved Check for Power on @geeksforgeeks
✔ Applied mathematical observation & efficient checks
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech #Zoho #SAPLabs

[Ayushi Upadhyay @ayushi__ofc]

🔄 Day 53/60 – #geekstreak60
Solved Flip to Maximize 1s on @geeksforgeeks
✔ Converted flip effect into gain/loss array
✔ Applied Kadane’s Algorithm for best subarray
✔ Achieved optimal O(N)
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

🔤 Day 52/60 – #geekstreak60

Solved Anagram Palindrome on @geeksforgeeks

✔ Counted character frequencies
✔ Checked odd frequency condition
✔ Efficient O(N) solution with constant space
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

🔢 Day 51/60 – #geekstreak60

Solved Implement Atoi on @geeksforgeeks

✔ Parsed string step-by-step (spaces, sign, digits)
✔ Handled overflow using long
✔ Stopped at first invalid character
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

🔗 Day 50/60 – #geekstreak60

Solved URLify a String on @geeksforgeeks

✔ Replaced spaces with %20 using string methods
✔ Clean and efficient O(N) solution

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#geekstreak60 #npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

✨ Day 49/60 – #geekstreak60
Solved Remove Spaces from String on @geeksforgeeks
✔ Used split() + join() for clean one-liner solution
✔ Removed all spaces efficiently in O(N) time
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

🔢 Day 48/60 – #geekstreak60

Solved Next Smallest Palindrome on @geeksforgeeks
✔ Mirrored left half to form palindrome
✔ Handled carry from middle when needed
✔ Covered edge case of all 9s
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

⚡ Day 47/60 – #geekstreak60 Solved today's challenge Toeplitz matrix on
@geeksforgeeks

Achieved O(N) time complexity Powered By
@NPCI_NPCI

#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

⚡ Day 46/60 – #geekstreak60 Solved Count increasing Subarrays
@geeksforgeeks
Achieved O(N) time complexity Powered By
@NPCI_NPCI

#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

⚡ Day 45/60 – #geekstreak60 Solved Sorted Subsequence of Size 3 on
@geeksforgeeks Achieved O(N) time complexity Powered By @NPCI_NPCI
#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech

[Ayushi Upadhyay @ayushi__ofc]

⚡ Day 44/60 – #geekstreak60
Solved Intersection of Two Sorted Arrays on @geeksforgeeks💻
✔ Used 2 pointer approach for efficient traversal
✔ Ensured distinct elements only in result
✔ Maintained O(1) extra space🚀 @NPCI_NPCI
#npci #GeeksforGeeks #POTD #DSA #CodingJourney

[Ayushi Upadhyay @ayushi__ofc]

⚡ Day 43/60 – #geekstreak60

Solved Segregate 0s and 1s on @geeksforgeeks

✔ Used two-pointer approach
✔ In-place swapping for optimal solution
✔ Achieved O(N) time and O(1) space
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#npci #GeeksforGeeks #POTD #DSA #Java #CodingJourney #WomenInTech