java Write a function foo (int [] arr1. int[] arr2) that returns true if arr2 co

Question

java

Write a function foo (int [] arr1. int[] arr2) that returns true if arr2 contains all the numbers that in arr1 and false. otherwise. This means for each item in arr1 you need to see if it is also somewhere in arr2. You cannot make any assumptions about the size of arr1 or arr2. You can assume there is at least one number in each array. For example: V If arr1 = (1, 2, 3, 4, 5) and arr2 = (1, 6, 3, 9, 4, 2, 5, 7}, then foo (arr1, arr2) would return true. If arr1 = {1, 2, 3, 4, 5) and arr3 = {4, 0, 6), then foo (arr1, arr 3) would return false.

Explanation / Answer

CheckElements.java

import java.util.Arrays;

public class CheckElements {

   public static void main(String[] args) {
      
       //Declaring and initializing integer type arrays
       int arr1[]={1,2,3,4,5};
       int arr2[]={1,6,3,9,4,2,5,7};
      
       //calling the method by passing arr1 and arr2 as arguments
       boolean bool=foo(arr1,arr2);
      
       /* If the method returns true then if block of code will get executed
       * If not,else block of code will get executed.
       */
       if(bool==true)
           System.out.println("Array2 contains all the elements that are in Array1");
       else
           System.out.println("Array2 not contains all the elements that are in Array1");

   }

  
   //This method will check whether all the elements in arr1 are present in arr2
   private static boolean foo(int[] arr1, int[] arr2) {
      
       //Declaring variable
       int count=0;
      
       //This for loop will check whether the elements in arr1 are present in arr2
       for(int i=0;i<arr1.length;i++)
       {
           for(int j=0;j<arr2.length;j++)
           {
               if(arr1[i]==arr2[j])
               count++;
           }
       }
      
       if(count==arr1.length)
       return true;
       else
       return false;
   }

}

________________________

Output:

Array2 contains all the elements that are in Array1

________________________

CheckElements1.java

import java.util.Arrays;

public class CheckElements1 {

   public static void main(String[] args) {
      
       //Declaring and initializing integer type arrays
       int arr1[]={1,2,3,4,5};
       int arr2[]={4,0,6};
      
       //calling the method by passing arr1 and arr2 as arguments
       boolean bool=foo(arr1,arr2);
      
       /* If the method returns true then if block of code will get executed
       * If not,else block of code will get executed.
       */
       if(bool==true)
           System.out.println("Array2 contains all the elements that are in Array1");
       else
           System.out.println("Array2 not contains all the elements that are in Array1");

   }

  
   //This method will check whether all the elements in arr1 are present in arr2
   private static boolean foo(int[] arr1, int[] arr2) {
      
       //Declaring variable
       int count=0;
      
       //This for loop will check whether the elements in arr1 are present in arr2
       for(int i=0;i<arr1.length;i++)
       {
           for(int j=0;j<arr2.length;j++)
           {
               if(arr1[i]==arr2[j])
               count++;
           }
       }
      
       if(count==arr1.length)
       return true;
       else
       return false;
   }

}

_________________________

Output:

Array2 not contains all the elements that are in Array1

_______Thank You

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