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Swapping Characters of a String in C#
To swap characters of a string, use the Select method.
Firstly, let’s say our string is −
string str = "PQRQP";
Now, you need to swap every occurrence of P with Q and Q with P −
str.Select(a=> a == 'P' ? 'Q' : (a=='Q' ? 'P' : a)).ToArray();
The above replaces the characters.
Let us see the compelet code −
Example
using System;
using System.Linq;
public class Program {
public static void Main() {
string str = "PQRQP";
var res= str.Select(a=> a == 'P' ? 'Q' : (a=='Q' ? 'P' : a)).ToArray();
str = new String(res);
Console.WriteLine(str);
}
}Output
QPRPQ
Updated on 22-Jun-2020 13:06:49
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