Problem 1024. Doubling elements in a vector

Created by Abdelhak ARESMOUK
Appears in Sequences & Series V

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Given the vector A, return B in which all numbers in A are doubling. So for:

A = [ 1 5 8 ]

then

B = [ 1 1 5 5 8 8 ]

Solve

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Last Solution submitted on Mar 25, 2025

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Mostafa on 30 Dec 2022

Nice problem without using kron function

James Baker on 8 Jan 2024

B = [ A A];
Is a valid answer! Your problem statement says nothing about the element in vector b being in order. Test 2 is correct for only one case.

Bhavik on 17 Feb 2024

Use repelem inbuilt function

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Problem 1024. Doubling elements in a vector

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Problem 1024. Doubling elements in a vector

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Last 200 Solutions

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Problem Recent Solvers9022

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