Describe an advanced data structure : Array Problems Involving Modulos
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of 5 mod 3?
0
3
2
1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which property does not hold for division in modulo operations?
Associative
Distributive
Commutative
None of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a perfect sum in the context of the subarray problem?
The sum of numbers up to a given position in the array
The sum of numbers in the entire array
The sum of all numbers in the array
The sum of numbers after a given position in the array
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can we determine if a subarray sum is zero modulo a given number?
By checking if the subarray sum is negative
By checking if the subarray sum is zero
By checking if the subarray sum is equal to the given number
By checking if two prefix sums are equal
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the dictionary in the efficient implementation of the subarray problem?
To store the sum of all elements
To store the array elements
To store the last position of each element
To store the last position of a perfect sum
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the time complexity of the efficient implementation of the subarray problem?
O(n log n)
O(n^2)
O(n^3)
O(n)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be considered when removing numbers from an array to make the sum modulo 3 equal to zero?
The largest element in the array
The number of elements in the array
The smallest element in the array
The total sum modulo 3
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