Parth Rathod

SDE@Amazon | Loves Linux | Building things, breaking them and learning along the way.

[Parth Rathod @xkeycode21]

Career update:- Joined Amazon as SDE-1

I have been grinding for the past 1.5 years while working full time job/ freelancing on the side. Tough but definitely doable and grateful for the people who’ve supported me.

I wish everyone a Happy and Blessed Rakshabandhan!

[Parth Rathod @xkeycode21]

@Shashidhar_98 Congratulations!

[Parth Rathod @xkeycode21]

22/11/25 @LeetCode POTD
Use mod to see how far values are to become 0 or 3 so they become divisible.
If mod equals
1 = we subtract 1 (1 operation)
2 = we add 1 ( 1 operation)
essentially boils downl to if mod != 3 add 1.
#LeetCode #Coding

[Parth Rathod @xkeycode21]

is the leetcode streak counter broken today?
solved today's potd but it did not increment the count.

Though the transition from 0 to 1 doesn't matter lol

#LeetCode

[Parth Rathod @xkeycode21]

@HVasani3301 Yes bro, I take my health seriously. Good food and sleep are non negotiable. Thank you for being concerned!

I hope you’re doing well :)

[Parth Rathod @xkeycode21]

Clocking in 12+ hours everyday (sometimes even on weekend) though there’s no time restrictions at work. Feels good to grow but sometimes I wonder at what cost.

Anyways, I hope it motivates you to put in the hard work because at the end that is what matters. Good luck!

[Parth Rathod @xkeycode21]

@HelloVyom @LeetCode Agreed 100%
But work is also crazy ;)

[Parth Rathod @xkeycode21]

@the6digitGuy @LeetCode I'm sorry bro apko aisa lag rha tha. Hausla rakhe and trust yourself sab ho jayega 🫶

[Parth Rathod @xkeycode21]

After a long time
27/10/25 @LeetCode POTD
We need to find 2 neighbouring rows that have atleast one 1. Keep a prevCnt to keep track of prev valid row. Calculate currCnt if it has atleast one 1 then we can update the ans as per prev * curr.
#dsa #LeetCode

[Parth Rathod @xkeycode21]

@the6digitGuy @LeetCode Badhiya bhaii, consistency to bani rhi hai na?

[Parth Rathod @xkeycode21]

Happy Choti Diwali and belated Dhanteras wishes for everyone. I hope this festive season of lights brings joy and happiness for you!

[Parth Rathod @xkeycode21]

@cool_coconut20 Awesome! Keep up the grind, all the best ;)

[Parth Rathod @xkeycode21]

Writing a lld and getting is approved by the team is gotta be difficult and exciting part of the job at the same time ;)

No sleep/work schedule
Dry run solutions
Pen paper
Make pocs
Draw/write

That is why I haven’t been posting lately.

How are y’all?

[Parth Rathod @xkeycode21]

@HVasani3301 Yes sir I’ll thanks! You have a good one :)

[Parth Rathod @xkeycode21]

@HVasani3301 Glad to hear that!
It’s going good. The process of learning , understanding and getting better at something is what I love so painful process but love the pain haha.

[Parth Rathod @xkeycode21]

11/10/25 @LeetCode POTD
we have option for every index to pick or not pick it. To not check the previous -1, and -2 we sort the array and use recursion to skip forward steps in this way we take care of the not_take element's prev vals. Use freq map to count all the occurrences.

[Parth Rathod @xkeycode21]

Hey everyone busy with work and also broke my 385 day streak sucks :(
10/10/25 @LeetCode POTD
Think about it in bottom up dp.
from n-k to n-1 we will exceed n's boundary
from n-k-1 to 0 we can simply add the val at i+k to get the final res
iterate through the ans arr to get max

[Parth Rathod @xkeycode21]

01/10/25 @LeetCode POTD
Simulate the process.
#DSA #Coding

[Parth Rathod @xkeycode21]

30/09/25 @LeetCode POTD
On trying we find that the problem boils down to MCM pattern. Too tired and hence did not solve it bottom up.
TC-O(n^3)
SC-O(n^2)
#DSA #Coding

[Parth Rathod @xkeycode21]

@ritik65477 @LeetCode Thanks!🙌🏻

[Parth Rathod @xkeycode21]

28/09/25 @LeetCode POTD
Sort and check for valid triangle condition for 3 consecutive pairs.
TC-O(nlogn)
#DSA #coding