Facebook Asked This Coding Question 50 TIMES!!! | 3Sum - Leetcode 15

leetcode, coding interview question, data structures, data structures and algorithms, faang

[GregHogg]

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[ganesh]

how can we store indices of duplicate elements in the given list in a dictionary ?

[vikasgadari]

Do you think these types of questions we can understand in short videos 😢

[SahilGamingIndia]

There s another optimal way to do this is to without using the hash map

First sort the array then a for loop
n then a two pointer approach
Reply to this if you want the code for it

[moradtaya]

I tried to right your code in java but it returns that testcases passed but took to long

[rohitbishoyi]

This can be done using Hasmap, hahset & sorting + 2 pointer!!

[nikhilchoudhary]

i did the same in Cpp got a timelimit exceeded error

[darknight]

Im pretty sute "sorted()" returns None so you cant assign it to a variable.
At least it didnt work for me once and i had to do sort(), i might be wrong

[vivekchaturvedi]

I can solve this in linq in c# and cut all the BS logic in other languages, it is quite easier and quicker to use linq as a SQL which is super fast