There were 21 MCQs and 2 coding questions hosted on hackkerank.
Time: 1 hr 30 mns.
The MCQs were from c, c++, os, networks for example
1. LDAP stands for?
2. 2^30+2^30+2^30+2^30 =?
3. Given three process P, Q, R . P requests resources A, B, C, Q requests B, C, D and R requests C, D, A which of the following orders is deadlock-free
4. Given a postfix expression find the value of expression
5. Which of the following is the inorder traversal for the given preorder traversal
6 Question-based on the precedence order of operators
1) Given a graph. Find if a cycle exists and print the nodes in the cycle. If multiple cycles exists print the cycle starting from the lowest index
2) Given a string S and a string T, count the number of distinct subsequences of T in S.
S = “rabbbit”, T = “rabbit”
1) Find the diameter in given tree which can start at any node and can end
at any node and should have only single turn.
10 / \ 5 8 5-10-8 has two turns 10 / \ 45 56 / \ \ 10 20 45
10-45-10-56-45 has 1 turn
20-45-10-56 has 2 turns
1) Word Break Problem
2) Find if an array of strings can be chained to form a circle
3) What datastructure will you use for designing lift
4) Efficient data structure for minimsing the following operations if we have an array arr[0 . . . n-1].
a) Add a value x to array from index l to r where 0 <= l <= r <= n-1
b) Find the value of a specified element of the array arr[i] where 0 <= i <= n-1.
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