Problem 44416. Sum of adjacent elements in a vector

Created by Shaul Salomon

Solve Later

Given a vector v, return a vector s containting the sum of every two adjacent elements in the vector.

Every element s(i) contains the sum of v(i) and v(i+1).

Example:

 v = [1, 2, 4, 4, 5, 8]
 s = [3, 6, 8, 9, 13]

Solve

Solution Stats

1273 Solutions
248 Solvers

Last Solution submitted on Nov 22, 2019

Last 200 Solutions

Solution Comments

Solution 1799547

1 Comment

1 Comment

bentzi grinfeld on 29 Apr 2019

why this code is not correct?
s = summ(v)
>> b=s
>> s(1)=[]
>> c=[[s],0]
>> s=[b+c]
>> s(end)=[]

Solution 1359214

2 Comments

2 Comments

Shaul Salomon on 3 Dec 2017

sorry mate, this is unfair for those who actually came up with a compact solution

Samuele Grillo on 12 Dec 2017

No need to be sorry.
Personally I think the regexp should be always forbidden.
I used it (and I had never thought about it before) because it seems that everyone is using it.

Problem Recent Solvers248

Problem Tags

22105 vectors

Problem 44416. Sum of adjacent elements in a vector

Solution Stats

Last 200 Solutions

Solution Comments

Problem Recent Solvers248

Suggested Problems

More from this Author25

Problem Tags

Problem 44416. Sum of adjacent elements in a vector

Solution Stats

Last 200 Solutions

Solution Comments

Problem Recent Solvers248

Suggested Problems

More from this Author25

Problem Tags

Players