@vishal_codeX

BTech’28, Learning nd Building Projects

127.0.0.1
Joined August 2025
Life doesn’t ask if you’re ready 🌱 It simply brings change. And your only choice is this: resist or grow
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Codeforces → Way Too Long Words — 71A → Bit++ — 282A → Team — 231A → Good Contest — 2266A → Three Piles — 2266B All basic 800-ish problems, but that's fine
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maybe there should be leetenglish for whoever wrote lc 2574
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lc 1592 easy T_T ???
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sometimes i wonder if i should re-learn my mother language
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Vishal retweeted
You know you chose the right career when all you need is your laptop, your brain & a good coffee on a random day.
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Day 23 of APEX 151 Today’s one: Permutation in String — LC 567 The key was keeping a fixed-size window and comparing character frequencies instead of generating permutations 23/151
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Day 22 of APEX 151 Today’s one: Minimum Size Subarray Sum — LC 209 Expand the window until the sum reaches the target, then shrink it from the left to find the smallest valid window 22/151
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Day 21 of APEX 151 Today’s one: Longest Substring Without Repeating Characters — LC 3 Sliding window + tracking the last index of each character. The key was moving the left pointer directly instead of checking the whole window again 21/151
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Day 20 of APEX 151 Today’s one: Trapping Rain Water — LC 42 Two pointers + keeping track of the highest wall on both sides Time: O(n) Space: O(1) 20/151
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Day 19 of APEX 151 Today’s one: 3Sum — LC 15 This one felt like a proper step up💀 Sorted the array, fixed one number, then used two pointers to find the other two. Also had to handle duplicates carefully so the same triplet doesn't show up twice 19/151
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Day 18 of APEX 151 Today’s one: Valid Palindrome — LC 125 Two pointers, but with a little cleanup along the way Skipped non-alphanumeric characters, compared everything case-insensitively, and kept moving inward 18/151
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Day 17 of APEX 151 Today’s one: Product of Array Except Self — LC 238 Just two passes: → Prefix products → Suffix products The trick was realizing the answer can be built while calculating both 17/151
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Got my Bharat Builds 2026 badge! Officially participating in the WeMakeDevs × AWS Bharat Builds Tour. Now it's time to build something. #BharatBuilds #AWS #WeMakeDevs #Hackathon
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Day 16 of APEX 151 Today’s one: Subarray Sum Equals K — LC 560 Prefix sums + HashMap At first, the total - k part felt a little confusing, but once the prefix-sum idea clicked, the solution made a lot more sense 16/151
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Attend a really awesome webinar by @Hiteshdotcom sir & @ChaiCodeHQ
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Vibe coding works until it doesn’t
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Cohort ki yaad aa gayi 🥺 @ChaiCodeHQ @Hiteshdotcom
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Day 15 of APEX 151 Today’s one: Longest Consecutive Sequence — LC 128 The interesting part was getting O(n) without sorting the array Used a HashSet and only started counting when the current number was the start of a sequence 15/151
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Happy “abhi thik krke deta hu” day
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