logo CodeStepByStep logo

Main Page → Exercises → JavaScript → Solve an Exercise

containsSumSequence

Language/Type: JavaScript arrays
Author: Melissa Hovik (on 2018/10/22)

Write a function containsSumSequence that accepts as parameters an array of Numbers nums and a targetSum and returns true if there is a non-empty sequence of adjacent values in nums that adds to the targetSum. A sequence of adjacent values is one that does not skip any values in the running total.

For example, if a variable called nums stores the following values:

[1, 4, 2, -3, 1, -8]

the call containsSumSequence(nums, 3) would return true since the sequence (4, 2, -3) has a sum of 3 and these are adjacent in the array. The call containsSumSequence(1) would also return true since the first element in the array adds to 1 (it is a sequence of length 1).

The call containsSumSequence(nums, 8) would return false since there is no sequence of adjacent values that sums to 8.

You may assume the given array contains only Number types and is not null.

Function: Write a JavaScript function as described, not a complete program.

You must log in before you can solve this problem.

Log In

Need help?

Stuck on an exercise? Contact your TA or instructor.

If something seems wrong with our site, please

Is there a problem? Contact us.