How do you add numbers stored in an array?

How do you add numbers stored in an array?

Algorithm

1. STEP 1: START.
2. STEP 2: INITIALIZE arr[] = {1, 2, 3, 4, 5}
3. STEP 3: SET sum = 0.
4. STEP 4: REPEAT STEP 5 UNTIL i
5. STEP 5: sum = sum + arr[i]
6. STEP 6: PRINT “Sum of all the elements of an array:”
7. STEP 7: PRINT sum.
8. STEP 8: END.

How do you form a pair from an array?

Approach:

1. Traverse the array and select an element in each traversal.
2. For each element selected, traverse the array with help of another loop and form the pair of this element with each element in the array from the second loop.

What is the sum of numbers 1 to 1000?

So there are 500 pairs of numbers that have a sum of 1001. Thus, the sum of numbers from 1 to 1000 is 500*1001 = 500,500.

How to find pairs with given sum in an array?

Q. Write an algorithm and program to find all pairs of elements in an integer array whose sum is equal to a given number. Solution : You are given an array and a number and task is to find all pairs of elements in an integer array whose sum is equal to a given number.

How to print all pairs with given sum?

A simple solution is to traverse each element and check if there’s another number in the array which can be added to it to give sum. Method 2 (Use hashing) . We create an empty hash table. Now we traverse through the array and check for pairs in the hash table.

How to count pairs with a given sum?

Count of unique pairs (i, j) in an array such that sum of A[i] and reverse of A[j] is equal to sum of reverse of A[i] and A[j]

How to find all pairs of numbers in Java?

In this article, we explained several different ways to find all pairs that sum up a given number in Java. We saw two different solutions, each using two Java core methods. As usual, all the code samples shown in this article can be found on GitHub — this is a Maven project, so it should be easy to compile and run it.