Computers And Technology College

Assign True to the variable has_dups if the string s1 has any duplicate character (that is if any character appears more than once) and False otherwise.



Here is the answer I wrote:


i = []
for i in range(len([s1])):
if s1.count(s1[i]) > 1:
has_dups = True
elif s1.count(s1[i]) = 1:
has_dups = False


Here is the message I got from the system:

Solutions with your approach don't usually use: elif



Please Help me to correct it.

Answers

Answer 1
i dont know the language of the code
probably you have sintacs mistakes in it

has_dups = false
for i in range(len([s1])):
has_dups = has_dups || s1.count(s1[i]) > 1

Related Questions

A java ____ is a program written in the java programming language that can be included in a web page.

Answers

Answer:

Java Applets are used to include java programs on web page.

Explanation:

Java Applets are small java programs that can be run on any browser with appropriate Java Plug-in and displays applet as a section of web page.

How to Create Applet

Create an applet class by extending it with JApplet and add a paint method in it. for example

import java.awt.*;

import javax.swing.*;

public class HelloWorld extends JApplet {

          public void paint(Graphics graphic)

           {

            super.paint(graphic);

           }

}

The above code will create an applet and super.paint(graphic) method will draw the applet for you.

In order to display "Hello World" string in applet. you just need to add the following line after super.paint(graphic); method.

graphic.drawString("Hello World" , 20, 20);

Run Code

Click on Run Button and you will able to see the applet in applet viewer window.

Answer:

Java Applets are used to include java programs on web page.

Explanation:

Java Applets are small java programs that can be run on any browser with appropriate Java Plug-in and displays applet as a section of web page.

How to Create Applet

Create an applet class by extending it with JApplet and add a paint method in it. for example

import java.awt.*;

import javax.swing.*;

public class HelloWorld extends JApplet {

         public void paint(Graphics graphic)

          {

           super.paint(graphic);

          }

}

The above code will create an applet and super.paint(graphic) method will draw the applet for you.

In order to display "Hello World" string in applet. you just need to add the following line after super.paint(graphic); method.

graphic.drawString("Hello World" , 20, 20);

Run Code

Click on Run Button and you will able to see the applet in applet viewer window.

Why are using some special characters (@, #, !, etc.) not a good idea?

Answers

There are pros and cons to using special characters in email subject lines. Generally, marketers report higher open rates.

Some report better engagement, but many don’t.

There are also reports of special characters causing problems with deliverability, mostly because spammers became very fond of special characters for a while.
In Windows you cannot use #,!,@ (There are more, I just don't remember them all) in a name of a folder. 

In some websites you cannot use special characters. Some characters are what you "escape" characters.

An escape character can cause an error when trying to insert data or get data from a database. Sometimes it can prevent a syntax error, if used the right way.

I have this question from the textbook:" Web Development and Design Foundations with HTML5-7th ed."

I cannot seem to figure out part "c" of the question.

1. Design a new web page using embedded CSS to configure a background color and text color. Include the following in your web page.

a. Your name

Use an h1 header that you have configured, using element selector with drop shadow text, transparent background color, and a sans-serif font

b. A description of your favorite hobbies and activities

Configure a CSS class that stylizes this description list

c. A photo of yourself (be sure to optimize the image for display on the Web)

Write the CSS for an id called holder that is configured to 80% width and centered

Put your photo in a that uses the id holder

Make sure that your image is accessible by using an alt tag, etc.

Make this image a hyperlink by adding a link to it to a favorite hobby site or your email with a mailto link

this is what I have so far, and kind of stuck!




Answers

Hi! I've never taken a class for web development, so I can't say for sure. But I think part (c) is looking for an image of you that is probably low in file size while still looking good. That means that .jpg will probably do, you can look in your photo editor when saving/exporting for settings such as compression and number of colors, and you can try to make the image just the right size for a normal screen (as long as it looks good on a larger screen).

Beyond that, there's just many details to this. Just follow the instructions a few times.
Make the image.
Make the HTML without the CSS.
Make the CSS and put it in a <style> HTML element.


Also, the question is weird:  it suggests using an "alt" tag. I think it's referring to the "alt" attribute of the <img/> tag. This specifies text that can appear if for any reason the image can't be displayed.

You can give an element an id by giving it the id attribute, like <div id="holder"></div>.
And the image can be a link by having the <img/> element inside of and <a> element.

Which of the following need to be assessed during unit testing?
A) algorithmic performance
B) code stability
C) error handling
D) execution paths
E) both c and d

Answers

Error handling & execution paths whether any of the following should be evaluated in the testing phase, and further discussion can be defined as follows:

Error handling relates to routines in programming that respond to unexpected inputs or conditions. It is also the process for dealing with the possibility of loss. The lucidity of error messages and the options provided to the users regarding problem resolution assess the quality of these procedures. It's significant because it makes life simpler for end-users to use the code appropriately. The execution route is a potential flow of command in a program. During symbolic execution, each execution path keeps and changes the mapping from variables to symbolic expressions. Sequence expressions including if cause an execution path to split into two distinct test steps.

Therefore, the answer is "Option E".

Learn more:

brainly.com/question/6646878

All of the following are the four more widely social media networks discussed in the text EXCEPT:
a. Twitter.
b. YouTube.
c. Facebook.
d. LinkedIn.
e. Groupon.

Answers

Answer: C

Explanation:  a website where users create a personal profile, add other users as friends, and exchange comments, photos, videos, and "likes" with them.

What was the only method of sharing files between computers before networks were invented?

Answers

Put the files on disk or tape and walk them over (SneakerNet).

Frequency of failure and network recovery time after a failure are measures of the _______ of a network.
A) Performance
B) Reliability
C) Security
D) Feasibility

Answers

Final answer:

The frequency of failure and network recovery time after a failure are measures of the reliability of a network, reflecting its stability and how quickly it can resume normal operations after downtime.

Explanation:

The frequency of failure and network recovery time after a failure are measures of the reliability of a network. When assessing reliability, it is important to consider how consistent a network is in terms of its uptime and its ability to maintain functionality over time.

Reliability is a key factor in network design and operation because it quantifies the likelihood of a system operating without failure for a certain period of time. In a network context, reliability encompasses not only the stability of the network but also the speed at which it can recover from issues, including errors, faults, and failures. An unreliable network might experience frequent downtimes or take a long time to recover from disruptions, negatively affecting the users and potentially leading to loss of data or service.

Let's consider another scenario outside of networking for a broader understanding of reliability. In research, reliability refers to the measure of a study's consistency that considers how likely results are to be replicated if a study is reproduced. Similar to network reliability, this also focuses on the predictability and stability of outcomes.

Reliability should not be confused with feasibility or performance, which deal with different aspects of network or system attributes.

Final answer:

The frequency of failure and network recovery time after a failure are measures of the reliability of a network, indicating the system's consistency and likelihood of uninterrupted performance.

Explanation:

The frequency of failure and network recovery time after a failure are measures of the reliability of a network. Reliability in this context refers to the likelihood that a system will perform as expected over a given period. It is a measure of consistency, indicating how likely it is for the network's performance to be replicated consistently without failures. A reliable network typically experiences less downtime and is able to recover quickly from interruptions, thus ensuring consistent connectivity and service availability.

In access, the columns in a table are called?

Answers

All tables are composed of horizontal rows and vertical columns, with small rectangles called cells in the places where rows and columns intersect. In Access, rows and columns are referred to as records and fields. A field is a way of organizing information by type.
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