Equal Row and Column Pairs - Leetcode 2352 - Python

This video talks about solving a leetcode problem which is called Equal Row and Column Pairs.
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[@techerror8]

Hello Guys, DON'T FORGET To LIKE & Subscribe. Press the Bell icon🔔for notification :)

[@Fido1hn]

Short, sweet and clear, thank you sir.

[@techerror8]

Glad it was helpful! Subscribe for more: )

[@Fido1hn]

@@techerror8 subscribed

[@techerror8]

@@Fido1hn Thanks for your support :)

[@safiullahshah8550]

That's a really pretty solution. Learnt a few new tricks. Thanks!

[@techerror8]

Glad it Helped :) Subscribe for more :)

[@rafaelnadal5892]

Amazing! thank you so much

[@techerror8]

Glad it Helped :) Subscribe for more :)

[@mohamedhussien4013]

Nice solution.

[@techerror8]

Glad it Helped :) Subscribe for more :)

[@sachinsuvarna3718]

can anybody explain zip(*grid)? why we have to give * ?

[@techerror8]

Without the *, zip() would expect a single iterable containing other iterables. For example, zip([1, 2, 3], [4, 5, 6]) would produce [(1, 4), (2, 5), (3, 6)], where each inner iterable is paired element-wise.
With the *, it unpacks the provided iterable into individual arguments. For instance, zip(*[[1, 2, 3], [4, 5, 6]]) would essentially become zip([1, 2, 3], [4, 5, 6]). Hope this Helps :) Subscribe for more :)

[@Imsakunthala]

Could you please explain why did you convert this to defaultdict to tuples? instead of list !
Can you please explain in detail!

[@techerror8]

The defaultdict is not necessary for this specific implementation. A regular dictionary would suffice. The conversion of rows and columns to tuples is done to ensure immutability and allow them to be used as dictionary keys. By converting the rows and columns to tuples, we can use them as keys in the rowCounts dictionary, which requires hashable keys. The use of tuples ensures that rows and columns are represented consistently and can be easily compared and used as dictionary keys. Hope this Helps :)

[@Imsakunthala]

@@techerror8 Thank you so much Team!

[@neerajchouksey3761]

what zip(*grip) does

[@sachinsuvarna3718]

zip(*grid) in Python is a convenient way to transpose or "unzip" a list of iterables into separate iterables, grouping corresponding elements from each iterable into tuples