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row vector summation in pairs without looping

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Sri Ramam Somanchi
Sri Ramam Somanchi 2023-6-17
回答： Satwik Samayamantry 2023-6-17
Hi, I'm a beginner in matlab,I need to compute the sum of all consecutive pairs in my row vector and sum of all those sums computed without looping over.
Ex : [1 2 3 4 5] will give (1+2)+(2+3)+(3+4)+(4+5)
Hope you can help me out. Thanks in advance!

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采纳的回答

Satwik Samayamantry
Considering you are giving a row vector as input named inputVec, you can get the required result using the following line without for loop
result = 2*sum(inputVec)-inputVec(1)-inputVec(length(inputVec))

更多回答（1 个）

Cris LaPierre
Cris LaPierre 2023-6-17
Seems like you could create 2 vectors from the given vector, one containing the first number in each summation, and the other containing the second number, and then just add the 2 vectors together.

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