Data Interview Qs - Do two array elements sum to N?

InterviewQs

Do two array elements sum to N?

Python Data Structures Algorithms

Forward this email to a friend or colleague and challenge them to solve it.

Hi, 

Given an array and a number N, write a function that returns True if there are two numbers in the array that add up to N. Otherwise, return False.

For example:

    

[1, 2, 3, 4], 5 -> returns True, 4+1 and 2+3 both equal 5

[1, 2, 3, 1], 5 -> returns True, 2+3 both equal 5

[1, 1, 2, 1], 5 -> returns False, no number add up to 5


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