Connectwise India Software Developer Intern Interview Questions and Answers

Technical MCQ questions on core computer science subjects were asked.

Q1. How to find whether the given linked list has loop in it?
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Q2. Explain osi model with example of browser.
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There was apti round with good apti questions and also code debugging

Q1. About polymorphism ,code polymorphism and inheritance
Ans. Coded it in cpp in notepad
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Q2. 3 apti question and also discussion on resume
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Q3. Angle between hands of clock on 10:25? Trains traveling towards eachother give speed where will they collide?
Ans. 
Angle between hands of clock at 10:25 is 147.5 degrees. Trains will collide at midpoint of their initial positions.
• To calculate angle between hands of clock, use formula: |(30*H)-(11/2)*M|

• For 10:25, H=10 and M=25, so angle = |(30*10)-(11/2)*25| = 147.5 degrees

• When two trains are traveling towards each other, their relative speed is added to get the collision speed.

• The collision point is the midpoint of their initial po...read more
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Q1. General resume based
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Q2. Strength and weakness
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Round duration - 120 Minutes
Round difficulty - Hard

Q1. 
Search in a Row-wise and Column-wise Sorted Matrix Problem Statement
You are given an N * N matrix of integers where each row and each column is sorted in increasing order. Your task is to find the positi...read more
Ans. Brute Force
• Run a loop from i = 0 to N - 1, to check each row.
  • Run a loop from j = 0 to N - 1, to check each element of the row.
    • If there is a match, return {i, j}.
• If the element is not found in the entire matrix, return {-1, -1}
Space Complexity: O(1)Explanation:
O(1).
 
Since only constant extra space is required.
Time Complexity: O(n^2)Explanation:
O(N ^ 2), where ‘N’ is the number of rows or columns in the matrix.
&nb...read more
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Q2. 
String Palindrome Verification
Given a string, your task is to determine if it is a palindrome considering only alphanumeric characters.
Input:
The input is a single string without any leading or trailing...read more
Ans. Space Complexity: Explanation: Time Complexity: Explanation:
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Q3. 
Covid Vaccination Distribution Problem
As the Government ramps up vaccination drives to combat the second wave of Covid-19, you are tasked with helping plan an effective vaccination schedule. Your goal is...read more
Ans. Brute force
The idea is to choose a peak value at the ‘dayNumber’ th index. Then we can create the array like a mountain with the peak of the mountain being at the  ‘dayNumber’ th index. The sum of the elements of this array must be less than or equal to maxVaccines.If we find that the sum is greater, then we have chosen a high peak value, and if it is less, then it means we have chosen a smaller peak value. So we ...read more
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Round duration - 20 Minutes
Round difficulty - Easy

Round duration - 30 Minutes
Round difficulty - Easy

Timing of test start from 11 AM and everything goes well here .

Q1. What is segmentation in the context of operating systems?
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Q2. How many levels of normalization are there in database management systems?
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Round duration - 60 Minutes
Round difficulty - Easy

It happen nicely and no problem occur.

Q1. 
Trapping Rain Water Problem Statement
You are given a long type array/list ARR of size N, representing an elevation map. The value ARR[i] denotes the elevation of the ith bar. Your task is to determine th...read more
Ans. Brute Force Approach
The idea here is to travel over every elevation on the map and calculate the units of water the elevation can store.
 
Here is the algorithm :
 
1. Iterate over every elevation or element and find the maximum elevation on to the left and right of it. Say, the maximum elevation on to the left of the current elevation or element that we are looking at is ‘maxLeftHeight’ and the maximum elevation on...read more
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Q2. 
Sort 0 1 2 Problem Statement
Given an integer array arr of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.
Input:
The first line contains an integer 'T' representing the n...read more
Ans. Sorting
Use any good sorting algorithm like Merge Sort, Quick Sort or inbuilt sorting function of different languages.
• Sort the Array and just return.
Space Complexity: O(1)Explanation:
O(1), As we are using constant space.
Time Complexity: O(nlogn)Explanation:
O(N*log(N)), where ‘N’ is the size of the array.
We are using inbuilt sort algorithm which has Overall Time Complexity O(N*log(N))
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Round duration - 90 mintues
Round difficulty - Hard

Environment is very bad the intervier video call is lagging.

Q1. What are the sub-parts or phases of the analysis part in compiler design?
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Q2. 
Left Rotations of an Array
Given an array of size N and Q queries, each query requires left rotating the original array by a specified number of elements. Return the modified array for each query.
Input:
...read more
Ans. Rotate One Element At A Time
The idea is to create a function which would rotate the array one element at a time. This can be done by shifting the array towards left by one element and copying the first element to the end of the array. For every query repeatedly call the above function, until the desired rotation is obtained.
 
If the number of rotations required, say ‘K’, is greater than the number of elements, ‘N’,...read more
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