Return Indices for x Smallest/Largest Values in Array

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Is there a clean and elegant way for extracting the indices of the x smallest or largest values in an array? For example say I have an array [1,6,4,9,0] and I want the indices of the 3 smallest values, [1,3,5]. The functions min/max only return the index for the single minimum/maximum.

Risposta accettata

Steven Lord
Steven Lord il 4 Giu 2020
Use the second output of the mink or maxk functions.

Più risposte (2)

David Hill
David Hill il 4 Giu 2020
[~,idx]=sort(x);
minIdx=idx(1:3);%for minimum 3
maxIdx=idx(end:-1:end-2);%for maximum 3

Sulaymon Eshkabilov
Sulaymon Eshkabilov il 4 Giu 2020
Modificato: Sulaymon Eshkabilov il 4 Giu 2020
here is one of the possible ways:
A = [...; ...; ...];
[Row1,Col1]=find(max(A(:))==A) % Shows row# and col# of largest element
[Row2,Col2]=find(min(A(:))==A) % Shows row# and col# of smallest element

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