Longest palindrome subsequence, given a non empty string.
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Find the duplicate elements in a given array?
They asked how to check if a string is palindrome.
how good are you at DSA and problem solving?
Given arrival and departure times of all trains that reach a railway station. Find the minimum number of platforms required for the railway station so that no train is kept waiting. Consider that all the trains arrive on the same day and leave on the same day. Arrival and departure time can never be the same for a train but we can have arrival time of one train equal to departure time of the other. At any given instance of time, same platform can not be used for both departure of a train and arrival of another train. In such cases, we need different platforms.
How is word search done on text files ?
Sort k sorted array to form a single array. Last common ancestor. Mostly focused on Time complexity and and different improved methods.
Kth Sub array sum question
monkey problem to find the correct path
They asked a stack implementation question for next greater element to the right in an array.
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