How can I get a char array in reverse order?

Question

my assignment question is like that

Write a program which prints the letters in a char array in reverse order using

void printReverse(char         


        

Answer 1

This should take about 6 ms. It reverses a char array "in-place" before printing.

public static void reverseString(char[] s) {
    int len = s.length;

    if (len == 0)
        return;

    for (int i=0; i < (len/2); i++)
    {
        char l = s[i];
        s[i] = s[len-i-1];
        s[len-i-1] = l;
    }

    System.out.println(s);
}