Prefix Sum

Subarray Sum

Given an array of integers and an integer target, find a subarray that sums to target and return the start and end indices of the subarray. It's guaranteed to have a unique solution.

Input:

1 -20 -3 30 5 4
7

Output: 1 4

Explanation: -20 - 3 + 30 = 7. The indices for subarray [-20,-3,30] is 1 and 4 (right exclusive).

Try it yourself

Title

Script

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Contrary to popular belief, Lorem Ipsum is not simply random text.

  >>> a = [1, 2, 3]
  >>> a[-1]
  3

Get premium for instant access to all content and solutions

Upgrade