# 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:
 `# Julia program to illustrate  ``# the use of count() method `` ` `# Getting the count of the number ``# of elements in the specified array ``# for which the given predicate p  ``# returns true. ``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:
 `# Julia program to illustrate  ``# the use of count() method `` ` `# Getting the counts of number of true elements ``# in the given collection of boolean values. ``println(count([false, false, false])) ``println(count([true, false, true])) ``println(count([true, true, true])) `

Output:
```0
2
3
```

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