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Elena L [17]
3 years ago
5

How does a hard drive work?

Computers and Technology
1 answer:
BigorU [14]3 years ago
8 0

a hard drive is a metal disk constantly spinning  while powered on.

The data is written with a  metal scratching the data onto the wheel.

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Write a function named "isValidPassword" that takes in a string and returns 1 if it stores a valid password and 0 otherwise, A v
Maslowich

Answer:

Here is code in java.

import java.util.*;

import java.lang.*;

import java.io.*;

class Solution

{

public static void main (String[] args) throws java.lang.Exception

{

   try{

   //declare and initialize string variables

       String str1="password";

       String str2="Pass_word";

    //calling function to check valid password

       System.out.println("output of password is: "+isValidPassword(str1));

        System.out.println("output of Pass_word is: "+isValidPassword(str2));

   }catch(Exception ex){

       return;}

}

// functionn to check the valid password

public  static int isValidPassword(String str)

{

// variables to count the lower,upper and non character

  int i, lower_c = 0, upper_c = 0, non_c = 0;

  char ch;

  for(i=0;i<str.length();i++)

  {

      ch = str.charAt(i);

     if(ch >= 'a' && ch <= 'z')

     {//count of lower character

        lower_c++;

     }

     else if(ch >= 'A' && ch <= 'Z')

     {

   //count of upper character

        upper_c++;

     }

     else

     {

   //count of non character

        non_c++;

     }

  }

  if(lower_c > 0 && upper_c > 0 && non_c > 0) {

     return 1;

  } else {

     return 0;

  }

}

}

Explanation:

Declare and initialize two string variables.In the isValidPassword() function, pass the string parameter and then count the lower, upper and non character in the string.If string contains call the three characters then function will return 1 otherwise it will return 0 .

Output:

output of password is: 0

output of Pass_word is: 1

8 0
3 years ago
State why hexadecimal is used to display the error code
maxonik [38]
“Hexadecimal uses digits that more closely resemble our usual base-10 counting system and it's therefore easier to decide at a glance how big a number like e7 is as opposed to 11100111. Higher information density. With 2 hexadecimal digits, we can express any number from 0 to 255.”
7 0
3 years ago
Presentations must have what to be efffective
RideAnS [48]

Answer:

eye contact with the audience, thorough research, you must give your audience time to ask questions

6 0
2 years ago
Identify the data set level of measurement for the following: individual tax filing status (single, head of household, widowed,
Snowcat [4.5K]

Answer:

Option (B) Nominal is the correct option.

Explanation:

Nominal data set is the set of the heights of data measurement for the particular tax filing status. It also used for the labeling of the variables without allowing them to the quantitative data type. So, that's why the following option is correct.

Other options are wrong because the following statement is related to the Nominal data set.

6 0
3 years ago
What is the most efficient<br> form of transportation we<br> have?
alisha [4.7K]

Answer:

The bicycle is a tremendously efficient means of transportation. In fact cycling is more efficient than any other method of travel--including walking! The one billion bicycles in the world are a testament to its effectiveness

Explanation:

6 0
3 years ago
Read 2 more answers
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