Counting number of elements in an array in Julia – count() Method
The count()
is an inbuilt function in julia which is used to count the number of elements in the specified array for which the given predicate p returns true and if p is omitted, counts the number of true elements in the given collection of boolean values.
Syntax:
count(p, itr)
or
count(itr)
Parameters:
- p: Specified set of instructions.
- itr: Specified collection of boolean values.
Returns: It returns the count of the number of elements in the specified array for which the given predicate p returns true and if p is omitted, counts the number of true elements in the given collection of boolean values.
Example 1:
println(count(i - >(i< = 3 ), [ 1 , 2 , 3 , 4 , 5 ]))
println(count(i - >(i> 3 ), [ 1 , 2 , 3 , 4 , 5 ]))
println(count(i - >( 2 < = i< = 5 ), [ 1 , 2 , 3 , 4 , 5 ]))
println(count(i - >(i> = 0 ), [ 1 , 2 , 3 ]))
|
Output:
3
2
4
3
Example 2:
println(count([false, false, false]))
println(count([true, false, true]))
println(count([true, true, true]))
|
Output:
0
2
3
Last Updated :
26 Mar, 2020
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