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I was interviewed before Oct 2020.
Round duration - 90 minutes
Round difficulty - Medium
Interviewer was cool, he started with basics of c and c++ and oops concept and extended to data structures .
Given an integer array ARR
of size N
, your task is to find the total number of subsequences in which all elements are equal.
A subsequence of an array i...
Count the total number of subsequences in which all elements are equal in an integer array.
Iterate through the array and count the frequency of each element.
Calculate the total number of subsequences for each element using the formula (frequency * (frequency + 1) / 2).
Sum up the total number of subsequences for all elements to get the final result.
Kevin requires assistance in reversing a string using the concept of a stack. Help Kevin by providing a solution that will reverse the string 'S' using a stack. The strings will only...
Reverse a string using a stack
Create a stack to store characters of the input string
Pop characters from the stack to reverse the string
Reconstruct the reversed string from the popped characters
Round duration - 30 minutes
Round difficulty - Easy
It was an easy round interviewer basically asked questions about family, goals and education background.
Tip 1 : Stick on the basics
Tip 2 : practice ds as much as you can
Tip 1 : keep it of one page
Tip 2 : don't put false things on resume and add atleast 1 good project.
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