C#: Count positive and negative numbers in a given array of integers
C# Sharp Basic: Exercise-89 with Solution
Write a C# Sharp program to count positive and negative numbers in a given array of integers.
Sample Solution:
C# Sharp Code:
using System;
using System.Linq;
namespace exercises
{
class Program
{
static void Main(string[] args)
{
// Array declaration and initialization with integer elements
int[] nums = { 10, -11, 12, -13, 14, -18, 19, -20 };
// Displaying the original elements of the array 'nums'
Console.WriteLine("Original Array elements:");
foreach (var item in nums)
{
Console.Write(item.ToString() + " ");
}
// Calling the 'test' method and displaying the count of positive and negative numbers in the array 'nums'
Console.WriteLine(test(nums));
// Another array declaration and initialization with integer elements
int[] nums1 = { -4, -3, -2, 0, 3, 5, 6, 2, 6 };
// Displaying the original elements of the array 'nums1'
Console.WriteLine("\nOriginal Array elements:");
foreach (var item in nums1)
{
Console.Write(item.ToString() + " ");
}
// Calling the 'test' method and displaying the count of positive and negative numbers in the array 'nums1'
Console.WriteLine(test(nums1));
// Empty array declaration (no elements)
int[] nums2 = {};
// Displaying the original elements of the array 'nums2' (empty array)
Console.WriteLine("\nOriginal Array elements:");
foreach (var item in nums2)
{
Console.Write(item.ToString() + " ");
}
// Calling the 'test' method for the empty array 'nums2' and displaying the count of positive and negative numbers
Console.WriteLine(test(nums2));
}
// Method to count the number of positive and negative numbers in an integer array
public static string test(int[] nums)
{
// Filtering positive and negative numbers using LINQ 'Where' clause
var pos = nums.Where(n => n > 0);
var neg = nums.Where(n => n < 0);
// Returning the count of positive and negative numbers as a formatted string
return "\nNumber of positive numbers: " + pos.Count() + "\nNumber of negative numbers: " + neg.Count();
}
}
}
Sample Output:
Original Array elements: 10 -11 12 -13 14 -18 19 -20 Number of positive numbers: 4 Number of negative numbers: 4 Original Array elements: -4 -3 -2 0 3 5 6 2 6 Number of positive numbers: 5 Number of negative numbers: 3 Original Array elements: Number of positive numbers: 0 Number of negative numbers: 0
Flowchart:
C# Sharp Code Editor:
Previous: Write a C# Sharp program to find the sum of the interior angles (in degrees) of a given Polygon. Input number of straight line(s).
Next: Write a C# Sharp program to count number of ones and zeros in the binary representation of a given integer.
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