Question

I cannot seem to find a single answer to this question. The output of this code is You entered: 236.0 89.5 142.0 166.3 93.0 with a trailing space at the end of the number 93.0. These inputs are changed and always have a trailing space on the last number. Now, I know it's because I have System.out.print(m[i] + " "); with the " " creating the space in between each number. How do I write it so each number has a space in between but not a trailing space on the last number? This is currently in Java.

public class PeopleWeights {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
double m[] = new double[5];
double weight = 0, avg, max = 0;
int i;
for (i = 0; i < 5; i++)
{
System.out.println("Enter weight " + (i + 1) + ": ");
m[i] = sc.nextDouble();
}
System.out.print("\nYou entered: ");
for (i = 0; i < 5; i++)
{
System.out.print(m[i] + " ");
weight = weight + m[i];
}
for (i = 0; i < 5; i++)
{
if (m[i] > max)
max = m[i];
}
System.out.println(" ");
avg = weight / 5;
System.out.println("Total weight: " + weight);
System.out.println("Average weight: " + avg);
System.out.println("Max weight: " + max);
  
  
return;

Answer 1

we have to make small change in the program to print as per requiements:

code:

import java.util.*;
public class PeopleWeights {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
double m[] = new double[5];
double weight = 0, avg, max = 0;
int i;
for (i = 0; i < 5; i++)
{
System.out.println("Enter weight " + (i + 1) + ": ");
m[i] = sc.nextDouble();
}
System.out.print("\nYou entered: ");
for (i = 0; i < 5; i++)
{
if(i==4)       //for last value only this will br printed with only value
{
System.out.println(m[i]);       //this will print without trailing space;
weight = weight + m[i];
}
else
{
System.out.print(m[i] + " ");//this is printed for value and space between number
weight = weight + m[i];
}
}
for (i = 0; i < 5; i++)
{
if (m[i] > max)
max = m[i];
}
System.out.println(" ");
avg = weight / 5;
System.out.println("Total weight: " + weight);
System.out.println("Average weight: " + avg);
System.out.println("Max weight: " + max);
  
  

}
}

OUTPUT:

Enter weight 1:
236.0
Enter weight 2:
89.5
Enter weight 3:
142.0
Enter weight 4:
166.3
Enter weight 5:
93.0

You entered: 236.0 89.5 142.0 166.3 93.0

Total weight: 726.8
Average weight: 145.35999999999999
Max weight: 236.0
screenshot: