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how to remove the duplicate character from String in C#

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace RemoveDuplicateCharFromString
{
    class Program
    {
        static void Main(string[] args)
        {
            string str = "aaabbbcccdddeeefff"; // input string with duplicate characters

Console.WriteLine("Input String: " + str);

// convert the string to character array

char[] arr = str.ToCharArray();

// we will compare each character of the array with all the other characters of the array for duplicates

for (int i = 0; i < arr.Length; i++) // Outer loop will fix an index and inner loop will iterate through all indexes one by one to compare them with outer index fixed character

{

for (int j = i + 1; j < arr.Length; j++) // if match found then shift all the character by one index ahead from the matched character index and decrement the length of the array by 1

{

if (arr[i] == arr[j]) // if match found then shift all the character by one index ahead from the matched character index and decrement the length of the array by 1

{

int temp = j; // shifting index to left

for (int k = temp; k < arr.Length - 1; k++) // here we are actually moving characters ahead from current matched character index

{

arr[k] = arr[k + 1]; // shifting towards left side

} Array.Resize(ref arr, arr.Length - 1);// finally reduce the size of array by 1 as we removed a duplicate element from it so total number of elements in an array should be reduced by 1 after removing any duplicate element from it   } } } } } } }   /* Output: Input String: aaabbbcccdddeeefff Output String: abcdef */

🤖 Code Explanation

This code is written in C#. It removes duplicate characters from a given string.

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how to remove the duplicate character from String in C#

C#

🤖 Code Explanation

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