MATLAB Answers

## How to know the quatity of the number in an array

Asked by uncung fgv

### uncung fgv (view profile)

on 16 May 2013
Accepted Answer by Azzi Abdelmalek

### Azzi Abdelmalek (view profile)

my data is:
A=[1 1 2 1 1 1 2 1 1 1 3 3 3 1 1 3 4 1 2 1 2 2 1 1 1 1 3 2 2 3 1 7 1 1 1 1 3 1 1 5 2 1 1 1 1 1 1 1 1 1 1 1 4 1 1 2 2 1 2 4 3 4 1 1 2 2 2 1 1 1 1 2 2 3 1 2 2 1 2 2 3 3 3 2 1 2 1 3 3 4 2 1 1 4 1 1 2 1 1 3 1 2 2 1 1 1 1 1 3 3 2 1 3 2 1 2 1 1 2 1 1 2 1 2 1 1 1 2 1 1 1 2 2 1 2 1 1 1 1 1 1 1 1 1 3 2 2 1 1 2 1 1 1 1 1 1 1 2 3 3 2 2 1 1 2 1 1 4 1 1 2 3 1 3 1 1 1 2 2 3 1 2 1 1 3 1 1 2 2 1 ]
I want to know how many times or the quantity of number 1 in my array.
thank you.

uncung fgv

### uncung fgv (view profile)

on 16 May 2013
am I missing this question?
I dont know exactly in english.
I want to know how many times the 1, or 2, or 3 ... is mentioned in that array.

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## 1 Answer

### Azzi Abdelmalek (view profile)

Answer by Azzi Abdelmalek

on 16 May 2013
Accepted Answer

out=sum(A(A==1))

Azzi Abdelmalek

### Azzi Abdelmalek (view profile)

on 16 May 2013
Use the solution of Sean de Wolski
sum(a==2)
uncung fgv

### uncung fgv (view profile)

on 16 May 2013
actually I want:
how many times alphabet/number/character 2 is mentioned in that array.
not the sum/amount.
uncung fgv

### uncung fgv (view profile)

on 16 May 2013
yes, thank you. sean de wolski. your answer is hidden.

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