Answered: unordered_set set1; for (int i = 1; i…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Give a tight bound of the nearest runtime complexity class for each of the following code fragments in Big-Oh notation, in terms of the variable N. In other words, write the code's growth rate as N grows. Write a simple expression that gives only a power of N using a caret ^character for exponentiation, such as O(N^2) to represent O(N²) or O(log N) to represent O(log₂ N). Do not write an exact calculation of the runtime such as O(2N³ + 4N + 14).

// e)
unordered_set<int>
set1;
for (int i = 1; i <= N; i++) {
set1.insert(i);
}
set<int> set2;
for (int i = 1; i <= N; i++) {
set1.erase(i);
set2.insert(i + N);
}
cout << "done!" << endl;
answer:

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