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1 year ago

Assume the variable myWord references a string. Write a statement that uses a slicing

Computers and Technology

1 answer:

givi [52]1 year ago

3 0

Answer:

"myWord[-5:]"

Explanation:

So whenever you slice a string, the syntax in python is expressed as:

string[a:b:c]

where a=start index (this is included in the sliced string)

b = end index (this is excluded from the sliced string)

c = increment

If any of these are included, they are set to default values, where a=0, b=len(string), and c=1.

The increment isn't necessary here, and it's just so you know the syntax a bit more

Anyways, I'm assuming when the question asks to display "the last 5 characters in the string" it means in order? e.g "abcdefghijk" -> "ghijk" and not "abcdefghijk" -> "kjihg"

The last piece of information to know is what a negative index represents.

For example if I have the piece of code

string = "hello world"

print(string[-1])

This will output "d", and the negative 1 represents the last letter. If you did -2, it would output the 2nd to last letter and so on.

So to print the last 5 characters, we simply use the -5 as the starting index.

string = "hello world"

print(string[-5:])

This will print "world" or in other words, the last 5 letters. The reason for this is because the -5 in the first spot means the starting index is the 5th to last letter, and when you have the : after the -5, this is the way of telling python you're slicing the string, and not indexing 1 character. You don't need to include another value after that, because it will default to the last index of the string, or more specifically the last index + 1, since the last index is still included.

So the last thing to know, is that if the string isn't greater than 5 characters, it just prints the entire string, and no errors are raised. You can test this out your self as well. So whenever you have a string that's less than 5 characters the entire string is outputted.

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Should I learn Python, C++, C# or VB to start off programming games for Windows. Open to other language recommendations as well!

Svetllana [295]

In theory, you can of course use any language you like, but there are a few commonly used ones.
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The basic programming you learn is still the same, so after you have learned a language you can quickly pick up most others.
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3 years ago

There is no way to track your smartphone once you lost it, true or false?

Ymorist [56]

If you originally had a tracking device installed on a different device like find my iPhone, you can easily see where it is. If your phone is Android, Google has a system where you can search where's my phone, and if you have your email login into your phone, you can log in on Google and Google will show you where it is.

6 0

3 years ago

Read 2 more answers

Write code to take a String input from the user, then print the first and last letters of the string on one line. Sample run: En

Ainat [17]

<h2>Answer:</h2>

//import the Scanner class to allow for user input

import java.util.Scanner;

//Begin class definition

public class FirstAndLast{

//Begin the main method

public static void main(String []args){

//****create an object of the Scanner class.

//Call the object 'input' to receive user's input

//from the console.

Scanner input = new Scanner(System.in);

//****create a prompt to tell the user what to do.

System.out.println("Enter the string");

//****receive the user's input

//And store it in a String variable called 'str'

String str = input.next();

//****get and print the first character.

//substring(0, 1) - means get all the characters starting

//from the lower bound (index 0) up to, but not including the upper

//bound(index 1).

//That technically means the first character.

System.out.print(str.substring(0,1));

//****get and print the last character

//1. str.length() will return the number of character in the string 'str'.

//This is also the length of the string

//2. substring(str.length() - 1) - means get all the characters starting

// from index that is one less than the length of the string to the last

// index (since an upper bound is not specified).

// This technically means the last character.

System.out.print(str.substring(str.length()-1));

} // end of main method

} //end of class definition

<h2>Explanation:</h2>

The code has been written in Java and it contains comments explaining important parts of the code. Kindly go through the comments.

The source code and a sample output have also been attached to this response.

To run this program, copy the code in the source code inside a Java IDE or editor and save it as FirstAndLast.java

Download java

3 0

2 years ago

The following program is run. Then the user clicks the "bottomButton" TWO TIMES. What will be displayed in the console?

IrinaK [193]

Answer:

A. aaa

bbb

ccc

ddd

B. bbb

ddd

ccc

C. bbb

ddd

aaa

D. bbb

ccc

ddd

8 0

3 years ago

Read 2 more answers

JAVA

butalik [34]

Answer:

import java.util.*;

public class MyClass {

public static void main(String args[]) {

Scanner input = new Scanner(System.in);

System.out.print("Input a word: ");

String userinput = input.nextLine();

for(int i =0;i<userinput.length();i+=2) {

System.out.print(userinput.charAt(i));

}

Explanation:

This line prompts user for input

System.out.print("Input a word: ");

This declares a string variable named userinput and also gets input from the user

String userinput = input.nextLine();

The following iterates through every other character of userinput from the first using iteration variable i and i is incremented by 2

for(int i =0;i<userinput.length();i+=2) {

This prints characters at i-th position

System.out.print(userinput.charAt(i));

5 0

2 years ago