用Java打印出一组数字的总和

Question

I'm currently practising with while loops and I'm trying to get my loop to add a set of numbers in range between 1 and 10, I've got the code printing out the numbers but not the sum: can someone help me with this?

 public void AddInArray()
 {
    int index = 0;
    while(index <= 10){
        System.out.println(index);
        index++;
    }

 }

Answer 1

Try this

 public void addInArray(int[] arr)
 {
    int index = 0;
    int sum = 0;
    while(index < arr.length){
        System.out.println(index);
        sum += arr[i];
        index++;
    }
    System.out.println(sum);

 }

Now to call it,

int[] arr = {1,2,3,4,5,6,7,8};
addInArray(arr);

Answer 2

So having used the code from the 11thdimension, i adapted it so now it works in my code:

public void AddInArray(int length)
{
    int index = 0;
    int sum = 0;
    while(index <= length){
        System.out.println(index);
        sum += index;
        index++;



    }
    System.out.println(sum);
}

So what this does is:

while the index is less than the length, print out the index, it also add the index to the integer known as sum and finally it increments the index by one. one the loop is finished it then carry's out the other function which is to print out the sum that has been storing the int values. it prints out the numbers from 1-10 and the sum of them 55.

Thanks for the help guys.