Maximum Subarray Sum

Find the maximum sum of a contiguous subarray using Kadane's algorithm.

Code

Algorithms

max_sum = current_sum = arr[0]
arr[1..].each do |x|
  current_sum = [x, current_sum + x].max
  max_sum = [max_sum, current_sum].max
end
return max_sum

Parameters

arr(array)

Array of numbers

Server

More Ruby Snippets

Array Difference

Find elements in the first array that are not present in the second array.

Array Frequencies

Count how many times each value appears in an array and return a frequency map.

Array Head

Get the first n elements of an array.

Array Intersection

Find common elements that exist in both arrays.

Array Tail

Get the last n elements of an array.

Array Union

Combine two arrays and remove duplicates to produce a union.