Select numbers from an array under a specific condition

조회 수: 73(최근 30일)
Masato Koizumi
Masato Koizumi 2018년 4월 1일
댓글: Masato Koizumi 2018년 4월 2일
Dear MATLAB Experts,
Hello. I was curious if I could request for an advice in constructing a program that does the following calculation.
I currently have an array A which contains random integers in numerical order. A = [1 2 4 5 7 9 11 12 13 14 18 23 26 28 32 33 36 37 38 40];
Starting from the first value of array A, I would like to select only the values from A where the selected values are spaced at least 4 numbers. That is, I would like to ultimately obtain A = [1 5 11 18 23 28 33 38] where the selected values from A are such that the numbers between have distances of at least 4.
I would greatly appreciate if you could provide me with any hints in programming this calculation. I am thinking of doing a while loop but having trouble where to start.
Thank you.

채택된 답변

Axel Kottgen
Axel Kottgen 2018년 4월 1일
You can do a for loop, followed by if to test if the current number in the loop is at least 4 units higher. If that is the case, you save the current number in the loop to a new array (B in my code) which will store your values. I used a variable "c" to store the last saved number, however you could use the last number of B: c=B(length(B))
It gives the current code, with the initial conditions setup:
for i=1:length(A)-1,
if c+4<=A(i+1),
B=[B A(i+1)];
Note your initial result in your post was incorrect, correct one is here:
B =
1 5 9 13 18 23 28 32 36 40
  댓글 수: 1
Masato Koizumi
Masato Koizumi 2018년 4월 2일
Thank you Axel Kottgen!! I deeply appreciate your help!

댓글을 달려면 로그인하십시오.

추가 답변(0개)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by