Question

How to swap two characters in string by index with Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        String str = "java python c c++";

        char[] arr = str.toCharArray();

        char tmp = arr[1];
        arr[1] = arr[7];
        arr[7] = tmp;

        str = new String(arr);

        System.out.println(str);
    }
}
 
 
 
 
/*
run:
  
jtva pyahon c c++
  
*/

 

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