How to sort one array based on the order of a second array?

1 次查看（过去 30 天）
David Mabwa
David Mabwa 2021-1-22
评论： David Mabwa 2021-1-22
Hi,
This seems like a very simple problem, but I can't seem to get it to work with the answers already available.
I have 2 string arrays:
A=["1a","1b","1c","1d","1e","2a","2b","2c","2d","2e"];
B=["A1_2a","U1_1c","Z1_2d","I1_1e","T1_1a","F1_2b","O1_1d","P1_2c","J1_2e","S1_1b"];
Let's say A is a newly sorted array from a previously disordered array (e.g. Q=["1c","2a","1e","2d","1b","2c","2e","1a","2b","1d"];)
How do I sort B, based on how Q was sorted?
The goal is to produce the array below
C=["T1_1a","S1_1b","U1_1c","O1_1d","I1_1e","A1_2a","F1_2b","P1_2c","Z1_2d","J1_2e"];
Thanks in advance.

请先登录，再回答此问题。

采纳的回答

Stephen23
Stephen23 2021-1-22
Ran in:
As far as I can tell, the order of Q is irrelevant.
A = ["1a","1b","1c","1d","1e","2a","2b","2c","2d","2e"]; % sorted
B = ["A1_2a","U1_1c","Z1_2d","I1_1e","T1_1a","F1_2b","O1_1d","P1_2c","J1_2e","S1_1b"];
[~,X] = ismember(A,extractAfter(B,'_'));
C = B(X)
C = 1×10 string array
"T1_1a" "S1_1b" "U1_1c" "O1_1d" "I1_1e" "A1_2a" "F1_2b" "P1_2c" "Z1_2d" "J1_2e"

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Multidimensional Arrays 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

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

Start Hunting!

Translated by