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tester [92]
2 years ago
11

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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java Two smallest numbers Write a program that reads a list of integers, and outputs the two smallest integers in the list, in a
SashulF [63]

Answer:

The code to this question can be defined as follows:

import java.util.*;//import package for user input

public class Main //defining a class

{

public static void main(String[] args)//defining main method  

{

   int m1,m2,num,t,i;//defining integer variable

   Scanner incx = new Scanner(System.in);//creating Scanner class object

   m1 = incx.nextInt();//input value

   m2 = incx.nextInt();//input value  

   if (m1 > m2)//use if block to check m1 greater than m2  

   {//swapping value

       t = m1;//holding m1 value in t

       m1 = m2;//defining m1 that take m2

       m2 = t;//holding m2 value  

   }

   for (i = 2; i < 6; i++)//defining for loop  

   {

       num = incx.nextInt();//input value  

       if (num < m1) //defining if block to smallest value

       {

           m2 = m1;//holding m2 value in m1

           m1 = num;//holding num value in m1

       }  

       else if (num < m2)//defining if block to smallest value  

       {

           m2 = num;//holding num value in m2

       }

   }

       System.out.println(m1 + " " + m2);//print two smallest values

   }

}

Output:

5

10

5

3

21

2

2 3

Explanation:

In the above code, five integer variable "m1, m2, num, t, and i" is declared, in which it creates the scanner class object for inputs the value and use m1 and m2 use to the input value.

In the next step, if a block is used to swap the value and pass into the for loop that use if block to find the two smallest values and hold its value into the m1 and m2 and print its value.

7 0
3 years ago
Identify three errors in this HTML code snippet:
Kazeer [188]

I have annotated the errors in the picture.

<em />

<em>Hope this helps :)</em>

5 0
1 year ago
Read 2 more answers
A(n) _____ is a fake online persona created to promote a particular point of view, often in praise of a firm, product, or indivi
drek231 [11]

Answer:

<u>Sock puppet</u>

Explanation:

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4 0
3 years ago
A detective agency is looking to bust an arms sale. According to available intelligence, the sale is likely to happen in one of
Paha777 [63]

Answer:

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H(X)=5.4224 bits per symb

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Explanation:

P(B)=2P(C)

P(A)=2P(B)

But

P(A)+P(B)+P(C)=1

4P(C)+2P(C)+P(C)=1

P(C)=1/7

Then

P(A)=4/7

P(B)=2/7

Probability Distribution={(A, 4/7), (B, 2/7), (C, 1/7)}

iii

If X={A,B,C}

and P(Xi)={4/7,2/7,1/7}

where  Id =logarithm to base  2

Entropy, H(X)=-{P(A) Id P(A) +P(B) Id P(B) + P(C) Id P(C)}

=-{(1/7)Id1/7 +(2/7)Id(2/7) +(4/7)Id(4/7)}

=5.4224 bits  per symb

if P(C)  =0

P(A)=2P(B)

P(B)=1/3

P(A)=2/3

H(X|Y="not C")= -(1/3)Id(I/3) -(2/3)Id(2/3)

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Which for loop syntax is correct?
Ugo [173]

Answer:

C

Explanation:

3 0
2 years ago
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