Question

Design a program that lets the user enter the total rainfall for each of 12 months into a list. The program should calculate and display the total rainfall for the year, the average monthly rainfall, the months with the highest and lowest amounts.

Answer 1

import java.util.Arrays;

import java.util.Scanner;

public class num1 {

public static void main(String[] args) {

Scanner in = new Scanner (System.in);

int []monthlyRainfall = new int [12];

System.out.println("Enter rainfall for January");

monthlyRainfall[0]= in.nextInt();

for(int i = 1; i<monthlyRainfall.length; i++){

System.out.println("Enter rainfall for the next Month");

monthlyRainfall[i]= in.nextInt();

}

System.out.println("The complete list is:");

System.out.println(Arrays.toString(monthlyRainfall));

//Calculating the total and average rainfall

int totalRainfall =0;

for(int i=0; i<monthlyRainfall.length; i++){

totalRainfall+=monthlyRainfall[i];

}

System.out.println("Total rainfall is "+ totalRainfall);

System.out.println("Average rainfall is "+(totalRainfall/12));

// finding the lowest rainfall

int min = monthlyRainfall[0];

int minMnth =0;

for(int i=0; i<monthlyRainfall.length; i++){

if(min>monthlyRainfall[i]){

min = monthlyRainfall[i];

minMnth =i+1;

}

}

System.out.println("The minimim rainfall is "+min);

System.out.println("The month with the minimum rainfall is "+minMnth);

// finding the highest rainfall

int max = monthlyRainfall[0];

int maxMnth =0;

for(int i=0; i<monthlyRainfall.length; i++){

if(max<monthlyRainfall[i]){

max = monthlyRainfall[i];

maxMnth = i+1;

}

}

System.out.println("The maximum rainfall is "+max);

System.out.println("The month with the maximum rainfall is "+maxMnth);

}

}

Step-by-step explanation:

• Create an array to hold the list of monthly rainfall from january to December int []monthlyRainfall = new int [12];
• Prompt user to enter the values for the monthly rainfall and fill up the array with the values using a for loop
• Print the populated List
• Use a for loop to calculate the Total rainfall by adding elements from index 0-11
• Calculate the average rainfall totalrainfal/12
• Using a for loop, find the maximum and minimum values in the array
• The index of the minimum value plus 1 Gives the month with the lowest rainfall
• The index of the maximum value +1 gives the month with the highest value