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2 years ago

In python, what is the difference between a dictionary and a set? How are they similar?

Computers and Technology

1 answer:

yuradex [85]2 years ago

4 0

Answer:

"A set is an unordered collection. A dictionary is an unordered collection of data that stores data in key-value pairs."

Explanation:

Set =>

Collection of non-repetitive elements.

Unordered

Unindexed

No way to change items.

Dictionary =>

Collection of key-value pairs.

Unordered

Indexed

Mutable

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valentinak56 [21]

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3 years ago

. Given an initially empty stack s that accepts integers, the following operations are performed: s.push (10) s.push (20) s.push

sp2606 [1]

Answer:

a) The composition of the stack is :- 80,50,20,10.

Where 80 is the top and 10 is the last element.

b) The sequence of the popped items 40,30,70,60,90.

Explanation:

Stack is LIFO type data structure means Last in First Out.The element inserted last will be out of the stack first.The removal and addition is only at the one end that is top.

First 10,20,30,40 will be inserted in the stack. 40 is a the top.Now two pop operations occurs. 40 and 30 will be removed from the stack.

Now 50,60,70 will be inserted in the stack then again two pop operations so 70 and 60 will be removed from the stack.

Now the stack contains 50,20,10.Top = 50.

80 and 90 are added to the stack and 1 pop operation that is 90 will be removed.

Stack is 80,50,20,10 . Top = 80.

Sequence of integers popped=40,30,70,60,90.

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3 years ago

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Paladinen [302]

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3 years ago

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3 years ago

Given a Student class, create a class with following characteristics:

Kay [80]

Answer:

ssume that,

Maximum “students” count can be 10.

*Driver Class*

*Solution class*

import java.util.*;

class Student {

private String name;

private int rollNo;

public String getName() {}

public void setName(String name) {}

public int getRollNo() {}

public void setRollNo(int rollNo) {}

};

class ClassRoom {

private int i;

private Student[] students;

public void addStudent(String name, int rollNo) {}

public Student[] getAllStudents() {}

};

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3 years ago