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3 years ago

Which loop prints the numbers 1, 2...100?

Computers and Technology

2 answers:

kherson [118]3 years ago

7 0

Answer:

while (c <= 100):

print (c)

c = c + 1

Explanation:

We can cancel out the while loops with ' < ' because then it won't print when C is 100.

while (c <= 100):

print (c)

c = c + 1

Is probably right because unlike the other while loop with ' <= ' it has a print statement before the C = C + 1 which means look at this:

C = 1

print(c)

C = C + 1

So when it's run 1 is printed

But when doing the other while loop:

c = 1

while (c <= 100):

print (c)

c = c + 1

C = 1

c = c + 1

print(c)

It prints 2 because it added 1 to C first before actually printing it.

ivanzaharov [21]3 years ago

6 0

Answer:

Abcdefghijklmnopqrstuvwxyx

Explanation:

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Answer:

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3 years ago

Which of the following are addressed by programing design? Choose all that apply.

Viktor [21]

Answer:

Its B, D, and E

Explanation:

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3 years ago

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What does the following code do? Assume list is an array of int values, temp is some previously initialized int value, and c is

BigorU [14]

Answer:

Option D is correct.

Explanation:

Option D is correct because when the condition if (list[j] < temp) is tested it only gets true when element in list[] array at jth position is less than the value in temp and after that it increments the value of c by this statement: c++ and so c is incremented from 0 to as much times as much elements in list[] are lesser than temp.

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4 years ago

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Write a recursive method to return the number of uppercase letters in a String. You need to define the following two methods. Th

satela [25.4K]

Answer:

Recursive function with two parameters that return the number of uppercase letters in a String

public static int count(String str,int h)//Defining function

{

if(str.charAt(0)>='A' && str.charAt(0)<='Z')//Checking the characters from A to Z

{

h++; //incrementing the counter

if(str.length()>=2){

return count(str.substring(1),h);//recalling function

}

if(str.length()>=2){

return count(str.substring(1),h); //recalling function

}

return h;

}

This is the recursive function with the name count of return type integer,having parameters str of string type and h of integer type.In this we are checking the characters at a particular position from A to Z.

Recursive function with one parameter that return the number of uppercase letters in a String

public static int count(String str)//Defining function

{

if(str.charAt(0)>='A' && str.charAt(0)<='Z')//Checking the characters from A to Z

{

count++; //incrementing the counter

if(str.length()>=2){

return count(str.substring(1));//recalling function

}

if(str.length()>=2){

return count(str.substring(1)); //recalling function

}

return count;

}

This is the recursive function with the name count of return type integer,having parameters str of string type .In this we are checking the characters at a particular position from A to Z.

Java program that return the number of uppercase letters in a String

import java.util.*;

public class Myjava{

static int count =0;//Defining globally

public static int count(String str,int h)//Defining function

{

if(str.charAt(0)>='A' && str.charAt(0)<='Z')//Checking the characters from A to Z

{

h++;

//incrementing the counter

if(str.length()>=2){

return count(str.substring(1),h);//recalling function

}

if(str.length()>=2){

return count(str.substring(1),h);

//recalling function

}

return h;

}

public static void main(String[] args)//driver function

{

System.out.println("Enter a string");//taking input

Scanner scan = new Scanner(System.in);

String s = scan.nextLine();

int h =0;

System.out.println("Counting the Uppercase letters: "+count(s,h));

}

Output

Enter a string WolFIE

Counting the Uppercase letters: 4

4 0

3 years ago

. What is the relationship between frequency, wavelength and speed of a wave?

jeka94

Answer:

vw = fλ

Explanation:

Sound, like all waves, travels at a certain speed and has the properties of frequency and wavelength. You can observe direct evidence of the speed of sound while watching a fireworks display. The flash of an explosion is seen well before its sound is heard, implying both that sound travels at a finite speed and that it is much slower than light. You can also directly sense the frequency of a sound. Perception of frequency is called pitch. The wavelength of sound is not directly sensed, but indirect evidence is found in the correlation of the size of musical instruments with their pitch. Small instruments, such as a piccolo, typically make high-pitch sounds, while large instruments, such as a tuba, typically make low-pitch sounds. High pitch means small wavelength, and the size of a musical instrument is directly related to the wavelengths of sound it produces. So a small instrument creates short-wavelength sounds. Similar arguments hold that a large instrument creates long-wavelength sounds.

The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw = fλ, where vw is the speed of sound, f is its frequency, and λ is its wavelength. The wavelength of a sound is the distance between adjacent identical parts of a wave—for example, between adjacent compressions as illustrated in Figure 2. The frequency is the same as that of the source and is the number of waves that pass a point per unit time.

5 0

3 years ago