Question

Create method:

Method name: maxIndex

Method parameters: An integer array named arr

Method return: An integer value

Method description: This method will find the index of the array arr with the maximum value.

For example, if arr ={1.0, 2.0, 5.5, 1.5}, then it returns 2 since the maximum is 5.5 and it is present in index 2. In case, there are two same values, it returns the index of the last same value.

Java

Answer 1

import java.util.Scanner;


public class App {
	/***
	 * Method name: maxIndex 
	 * Method description: This method will find the index of
	 * the array arr with the maximum value.
	 * 
	 * @param arr Method parameters: An integer array named arr
	 * @return Method return: An integer value
	 */
	private static int maxIndex(int arr[]) {
		int max = arr[0];
		int index = 0;
		for (int i = 0; i < arr.length; i++) {
			if (arr[i] > max) {
				max = arr[i];
				index = i;
			}
		}
		return index;
	}


	/**
	 * The start point of the program
	 * 
	 * @param args
	 * 
	 */
	public static void main(String[] args) {
		Scanner keyBoard = new Scanner(System.in);
		System.out.print("Enter the size of array: ");
		int size = keyBoard.nextInt();
		int arr[] = new int[size];
		for (int i = 0; i < arr.length; i++) {
			System.out.print("Enter element " + (i + 1) + ": ");
			arr[i] = keyBoard.nextInt();
		}
		System.out.println("\nThe index of the array arr with the maximum value maxIndex: " + maxIndex(arr));


		keyBoard.close();
	}
}