Count the integer array values Android

Am assuming you want to sum up the content of your array. If so then try:

 int sum = 0;
 for (int i= 0; i < abc.length; i++) {
     sum += abc[i];
 }
 System.out.println(sum);

Just use the advance loop for this:

         int sum = 0;
        for (int i : abc) {
            sum += i;
        }
        System.out.println(sum);

To calculate the summary of an integer array:

• Declare a summary variable with 0 as init value.

• Go through each element in the array, then add its value to the summary variable

Solution 1: Using traditional for loop

int[] abc = {123, 100};

int arrayLength = abc.length;
int arraySum = 0;
for (int arrayIndex = 0; arrayIndex < arrayLength; arrayIndex++) {
    int value = abc[arrayIndex];
    arraySum = arraySum + value;
}

Solution 2: Using enhanced for loop (available from Java 5)

int[] abc = {123, 100};

int arraySum = 0;
for (int value : abc) {
    arraySum = arraySum + value;
}

Solution 3: Using Stream API (required Java 8 and API level 24)

int arraySum = Arrays.stream(abc).sum();

In your app, you might need to calculate the summary of an integer array in many places, so you can create a method and use it everywhere you need.

public int calculateSum(int[] array) {
    int arraySum = 0;
    for (int value : array) {
        arraySum = arraySum + value;
    }
    return arraySum;
}

Use the method

int[] abc = {123, 100};

int arraySum = calculateSum(abc);

  int[] abc = {123, 100};
    int value=0;
    for(int i=0; i<abc.length; i++){           
        int x =(int) Array.get(abc, i);
        value=value+x;
      }       
      System.out.println(value);

Updates

Explanations:

In order to get the total value of the array you need to loop inside the array. So in my case I use for loop, abc.length is method to get the length of the whole array and so helps us to interact with all element inside the array.

I am assigning each element of an array to variable x in each difference loop. Array.get(abc, i) here we are using get method of Array class to get a specific element of array in index i that we assign to x.

Final we had each element of the array to a variable value in every interaction, The last interaction will be our summation of all elements of our array.

Hope this helps,Sorry for my English.

I think there may be better ways to calculate the sum of the elements in a List in Java than this, below shows the source code for a Java “sum the integers in a list”:

    int[] abc = {123, 100};
    
    int sum = 0;
    for (int value : abc) {
        sum = sum + value; // or can be; sum += value;
    }
    System.out.println(sum);

Note that one thing you have to be careful with in an algorithm like this is that if you’re working with very large numbers, the sum of a list of integers may end up being a long value. I assume you are just adding small number of int (As most “sum” algorithms don’t account for this, but I thought I should mention it.)