Problem

3/10

Getting an element

Theory Click to read/hide

To get the value of an element from an ArrayList, use the  get(index)
method For example:

int a = arr. get(0);

To find out the number of elements in an array, you can use the size() method
For example:
int count = arr. size();

Problem

Iterate through all the values ​​of the ArrayList and output only the positive elements.

Input: The first line is the number of elements in the array. The second line contains the elements of the array.

Output: print only the positive elements from the sequence into a string.
 
Examples
# Input Output
1 4
2 -4 0 100 		2 100

time 1000 ms
memory 256 Mb
Rules for program design and list of errors in automatic problem checking

Teacher commentary

Insert the missing code snippets
Java
Write the program below 
#include <iostream>
#include<vector>
using namespace std;
int main() {
        int n;
	cin >> n;
    
	for (int i = 0; i < a.size(); i++)
		cout << a[i]<<" ";
  return 0;
}

     

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