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AveGali [126]
3 years ago
11

To assign the contents of one array to another, you must use ________.

Computers and Technology
1 answer:
iren [92.7K]3 years ago
8 0

Answer:

Option c is the correct answer for the above question.

Explanation:

  • The array is used to holds multiple variables and the assignment operator can assign only a single variable at a time. So if a user wants to assign the whole array value into other array value then he needs to follow the loop.
  • The loop iteration moves on equal to the size of the array. It is because the array value moves into another array in one by one. It means the single value can move in a single time. So the moving processor from one array to another array takes n times if the first array size is n.
  • The above question asked about the processor to move the element from one array to another and the processor is a loop because the loop can execute a single statement into n times. So the C option is correct while the other is not because--
  1. Option 'a' states about one assignment operator which is used for the one value only.
  2. Option b states about the equality operator which is used to compare two values at a time.
  3. Option d states any of these but only option c is the correct answer.
  4. Option 'e' states none of these but option c is the correct.
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A file named 'input.txt' contains a list of words. Write a program that reads the content of the file one word at a time. Check
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Answer:

// here is code in java.

import java.io.*;

import java.util.Scanner;

class Main{  

    // function to check a word is palindrome or not

 private static boolean is_Palind(String str1)

 {

     // if length of String is 0 or 1

   if(str1.length() == 0 || str1.length() == 1)

   {

     return true;

   }

   else

   {

       // recursively check the word is palindrome or not

     if(str1.charAt(0) == str1.charAt(str1.length()-1))

     {

       return is_Palind(str1.substring(1,str1.length()-1));

     }

     

     else

     {

       return false;

     }

   }

 }

// driver function

 public static void main(String[] args)

 {// variable to store word

   String word;

   // BufferedWriter object

   BufferedWriter buff_w = null;

   // FileWriter object

   FileWriter file_w = null;

   // Scanner object

   Scanner sc = null;

   try

   {

       // read the input file name

     sc = new Scanner(new File("input.txt"));

     // output file

     file_w = new FileWriter("output.txt");

     // create a buffer in output file

     buff_w = new BufferedWriter(file_w);

     

     // read each word of input file

     while(sc.hasNext())

     {

       word = sc.next();

     // check word is palindrome or not

       if(is_Palind(word))

       {

           // if word is palindrome then write it in the output file

         buff_w.write(word);

         buff_w.write("\n");

       }

     }

     // close the buffer

     buff_w.close();

     // close the input file

     sc.close();

   }

   // if there is any file missing

   catch (FileNotFoundException e) {

     System.out.println("not able to read file:");

   }

   // catch other Exception

   catch (IOException e) {

     e.printStackTrace();

   }

 }

}

Explanation:

Create a scanner class object to read the word from "input.txt" file.Read a word  from input file and check if it is palindrome or not with the help of is_Palind() function.it will recursively check whether string is palindrome or not. If it is  palindrome then it will written in the output.txt file with the help of BufferedWriter  object. This will continue for all the word of input file.

Input.txt

hello world madam

level welcome

rotor redder

output.txt

madam

level

rotor

redder

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