Thread: Find the lowest number

I have to find the average, highest, and lowest numbers in an array. I already have the average and highest, and I thought I could find the lowest number the same way I found the highest, but it's not working. It just keeps coming out to 0. Please help, I'm pretty confused and I've tried out different ways, but I want to see if there are better ways than doing MAX_VALUE for the lowest, then looping it through.

import java.util.Scanner;
 
public class Test_Scores {
	public static void main(String[] args) {
		//array,scanner,values
		Scanner input = new Scanner(System.in);
		double[] allScores = new double[5];
		double sum = 0;
		double average = 0;
		double highest = allScores[0];
		double lowest = allScores[0];
 
	for(int i = 0; i < allScores.length; i++) {
		System.out.print("Enter score for test " + (i + 1) + ": ");
			allScores[i] = input.nextDouble();
	}
	//Average grade
	for(int a = 0; a < allScores.length; a++) {
		sum += allScores[a];
		average = sum / 5;
	}
	//Highest grade
	for(int h = 0; h < allScores.length; h++) {
		if (allScores[h] > highest) {
			highest = allScores[h];
		}
	}
	//Lowest grade
	for(int l = 5; l < allScores.length; l--) {
		if (allScores[l] < lowest) {
			lowest = allScores[l];
		}
	}
	//output
	System.out.println("The average grade is: " + average);
	System.out.println("The highest grade is: " + highest);
	System.out.println("The lowest grade is: " + lowest);
	}
}

These are the results

Enter score for test 1: 98
Enter score for test 2: 96
Enter score for test 3: 92
Enter score for test 4: 65
Enter score for test 5: 85
 
The average grade is: 87.2
The highest grade is: 98.0
The lowest grade is: 0.0

Well, initially your lowest score is set to 0. Unless you enter a number less than 0, your for loop will not find anything "lower"

Setting the highest and lowest scores should be done after you have taken the input from the user.