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Thursday, 25 August 2016

Chapter 7 Exercise 26, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

7.26 (Strictly identical arrays) The arrays list1 and list2 are strictly identical if their corresponding elements are equal. Write a method that returns true if list1 and list2 are strictly identical, using the following header: public static boolean equals(int[] list1, int[] list2) Write a test program that prompts the user to enter two lists of integers and displays whether the two are strictly identical. Here are the sample runs. Note that the first number in the input indicates the number of the elements in the list. This number is not part of the list.


Enter list1: 5 2 5 6 1 6
Enter list2: 5 2 5 6 1 6
Two lists are strictly identical
Enter list1: 5 2 5 6 6 1
Enter list2: 5 2 5 6 1 6
Two lists are not strictly identical 

import java.util.Scanner;
 
public class ProgrammingEx7_26 {
 public static void main(String[] args) {
  Scanner input = new Scanner(System.in);
 
  System.out.print("Enter list1:");
  int[] list1 = new int[input.nextInt()];
  for (int i = 0; i < list1.length; i++) {
   list1[i] = input.nextInt();
  }
 
  System.out.print("Enter list2:");
  int[] list2 = new int[input.nextInt()];
  for (int i = 0; i < list2.length; i++) {
   list2[i] = input.nextInt();
  }
 
  if (equals(list1, list2)) {
   System.out.println("Two lists are strictly identical");
  } else {
   System.out.println("Two lists are not strictly identical");
  }
 
 }
 
 public static boolean equals(int[] list1, int[] list2) {
 
  if (list1.length != list2.length)
   return false;
 
  for (int i = 0; i < list2.length; i++) {
   if (list1[i] != list2[i])
    return false;
  }
 
  return true;
 
 }
}

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