28 May 2025
Day 70: Cornered by 1s 🔲
Today's challenge: Check if a binary matrix contains a rectangle with all four corners as 1s.
✅ Solved by tracking row pairs with matching 1s — clever use of hashing made it quick!
#GFG160 #MatrixChallenge #DSA #GeekStreak2025
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21 May 2025
Day 63: Kth Smallest in the Multiplication Matrix 📊🔢
Today's challenge: Find the kth smallest number in an m×n multiplication table.
✅ Used binary search over value range — smart counting inside the matrix grid!
#GFG160 #BinarySearch #MatrixChallenge #DSA #GeekStreak2025
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25 Dec 2024
🔥 Day 31: #GfG160
💡 Problem: Set Matrix Zeroes
🛠️ Task: Modify a matrix so that if mat[i][j] = 0, the entire row & column are set to 0 — in constant space.
🌟 Key:
Use indicators for zeroing.
Efficient in-place transformations.
Another win! 🚀 #CodingJourney #MatrixChallenge
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11 Nov 2024
Today I tackled a classic matrix problem! Replaced all 'O's surrounded by 'X's using DFS in C . Great practice for mastering boundary-connected regions and matrix traversal. 💻 #Coding #CPP #MatrixChallenge #100DaysOfCode #CodeNewbie #LeetCode
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10 Sep 2021
I’m thinking about not watching the trailer or any reviews or write up about the matrix 4 movie 😏 #MatrixChallenge @TheMatrix
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28 Mar 2021
Finished my #MatrixChallenge today with a brick session on the turbo & then a 5k run! Really enjoyed having it to keep pushing me on through the month especially with my running. Still time to sign up if you fancy taking part too! @BrainTumourOrg #fundraising
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Join us at: twitch.tv/yhrocu
We have Mike Jones, former member of Anonymous, speaking about his background in cyber security and pathways into cyber #matrixchallenge
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Join us over on twitch at twitch.tv/yhrocu to listen to some amazing speakers and the winners are revealed for #Matrixchallenge 🎉👏🏼
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1 Apr 2020
Hoy 31 de marzo, se cumplen 21 años 😱 del estreno de la primera película de la saga Matrix y así lo celebramos, con Zlatan haciendo de Neo!
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¿Te acuerdas de @Ibra_official viralizando el #MatrixChallenge el año pasado?🤯 ⬇️
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10 Mar 2020
Congratulations to two of our Year 10 students who have qualified for the Matrix Challenge regional semi-finals at the start of April. Good luck!
#matrixchallenge
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2 Mar 2020
Congratulations Daniel in Year 9 on reaching the final of the @TarianROCU #matrixchallenge in Cardiff on March 28th! Excellent achievement
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25 Feb 2020
Llongyfarchiadau enfawr i Jack Gleeson 7-4, sydd wedi llwyddo cyrraedd rownd derfynol cystadleuaeth seibrdiogelwch cenedlaethol Her Matrix 2020. 🖥🖱
Pob lwc i ti, Jack! 😄👍
#TGChBroMyrddin #MatrixChallenge @YGGBM
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11 Feb 2020
Mae’r bechgyn wrthi yn cyflawni’r #MatrixChallenge cystadleuaeth diogelwch seibr cenedlaethol. The boys competing in the Matrix Challenge national cyber security competition. #Diwrnoddiogelwcharyrhyngrwyd
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11 Feb 2020
Today, 30 students are taking part in the #MatrixChallenge
We will be working on a video clip, which will premiere later in the week..... #watchthisspace
@UK_SIC #SaferInternetDay2019
@TheApolloTrust #apollopartnershiptrust
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11 Feb 2020
Aged 11 to 17?
See yourself as a future cyber-sleuth?🕵️♂️
Enter the #MatrixChallenge before this Friday and put your coding, steganography and legal skills to the test for the chance to win goodies like laptops, drones and tablets.
Interested? Visit matrix-challenge.uk
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2 Feb 2020
This is an awesome initiative! The Matrix challenge...
Lets get more teens excited about security and working on the 'white' side :)
#matrix #challenge #matrixchallenge #stem #cybersecurity #ciso #security #infosecurity #hacking #whitehat #justeat #inf…lnkd.in/dFNFTPM
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31 Jan 2020
Read about who the students took part in The Matrix Challenge.
The Matrix Challenge is a cyber security activity aimed at 11-17 year olds.
theleighutc.org.uk/the-matri…
#MatrixChallenge #UTC #STEM #ComputerScience
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29 Jan 2020
Yesterday our IT students took part in the national #MatrixChallenge A fantastic cyber crime competition run by @YH_CyberProtect . If you fancy a career fighting cyber crime, find out more about our IT courses at our Open Saturday: wilberforce.ac.uk/events/y11…
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