Finding the Start Index of the Specified Range in C#

The Range Structure is introduced in C# 8.0. It represents a range that has a start and end indexes. You are allowed to find the start index of the given range with the help of Start Property provided by the Range struct.

Syntax:

public property Index Start { Index get(); };

Here, Index represents the inclusive start index of the range.

Example 1:

// C# program to illustrate the use 
// of Start property of Range struct 
using System; 
  
namespace range_example { 
  
class GFG { 
  
    // Main Method 
    static void Main(string[] args) 
    { 
  
        // Creating range 
        // using Range Constructor 
        var r1 = new Range(0, 5); 
  
        // Creating range 
        // using range operator 
        Range r2 = 3..7; 
  
        // Finding the Starting  
        // index of r1 and r2 ranges 
        // Using Start property 
        var res1 = r1.Start; 
        Console.WriteLine("Staring index of r1 range: " + res1); 
  
        var res2 = r2.Start; 
        Console.WriteLine("Starting index of r2 range: " + res2); 
    } 
} 
} 

Output:

Staring index of r1 range: 0
Starting index of r2 range: 3

Example 2:

// C# program to illustrate how to use 
// Start property of Range structure 
using System; 
  
namespace range_example { 
  
class GFG { 
  
    // Main Method 
    static void Main(string[] args) 
    { 
        // Creating and initailizing an array 
        string[] arr = new string[8] {"Archery", "Badminton", "Cricket", "Bowling", 
                                   "Boxing", "Curling", "Tennis", "Skateboarding"}; 
  
        // Creating ranges 
        // Using Range(Index, Index) 
        // Constructor 
        var r1 = new Range(0, 3); 
        var r2 = new Range(4, 7); 
  
        // Finding the start index  
        // of the specified range 
        // Using Start property 
        var res1 = r1.Start; 
        var res2 = r2.Start; 
        Console.WriteLine("Start Index of Range {0} is {1}"+ 
               " and the item is {2}", r1, res1, arr[res1]); 
  
        Console.WriteLine("Start Index of Range {0} is {1}"+ 
               " and the item is {2}", r2, res2, arr[res2]); 
    } 
} 
} 

Output:

Start Index of Range 0..3 is 0 and the item is Archery
Start Index of Range 4..7 is 4 and the item is Boxing

My Personal Notes

Recommended Posts: