Java Coding Interview Practice, Live Session on Pramp

In this session, the asked questions are:
- Array Quadruplet
- Decrypt Message

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[kunal_chand]

The Whole Idea is Cool !!!!
Taking Interview of each other . Wow, Loved the idea .
The thing we use to do with each other when we prepared for exams during our childhood.

[shiprasingh]

The more optimal solutions would have been O(n^2) time with O(n^2) space complexities, using a hashmap and an array of all pairs of elements
And
O(n^2logn) time and O(n^2) space complexities using a sorted array of all pairs of elements.

[SticPRO]

Hey guys can someone tell me why the two outer for loops are necessary to get the first two elements of the sorted array. Why can’t we implicitly just retrieve them using the indexes under only one for loop

[brianramaswami]

6:24 why doesn’t the second for loop need to end at “n-1” instead of n. Don’t we need to stop one element earlier then the first for loop since we start an index ahead?

[lekdendorjia]

much easier way to remap the invalid characters
for(int i=0;i<arr.length();i++)
{
arr[i]= (char) ( ( arr[ i ] - 97 ) % 26 + 97);
}

[nitesh]

tried doing "Decrypt message" in java.

[DheeraPrabhakar]

Are these employees of pramp or real users? Feels like they deliberately making mistakes to put up a show.