Answer / pratik

public string Reverse(string str)
{
// convert the string to char array
char[] charArray = str.ToCharArray();
int len = str.Length - 1;
/*
now this for is a bit unconventional at first glance because there
are 2 variables that we're changing values of: i++ and len--.
the order of them is irrelevant. so basicaly we're going with i from
start to end of the array. with len we're shortening the array by one
each time. this is probably understandable.
*/
for (int i = 0; i < len; i++, len--)
{
/*
now this is the tricky part people that should know about it don't.
look at the table below to see what's going on exactly here.
*/
charArray[i] ^= charArray[len];
charArray[len] ^= charArray[i];
charArray[i] ^= charArray[len];
}
return new string(charArray);
}

Answer / sudhir2884

class Program
{
static void Main(string[] args)
{

string str = "i am a good boy";
string[] strarray = str.Split(' ');
for (int i = strarray.Length-1; i>=0; i--)
{
Console.WriteLine(strarray[i]);
}
Console.ReadLine();
}
}

Answer / praveen kumar

class Program
{
static void Main(string[] args)
{
string s = "I AM A BOY";
for (int i = 0; i < s.Length; i++)
{
Console.Write(s[s.Length-i-1]);
}

Console.ReadLine();
}

Answer / ranjith m

private void button1_Click(object sender, EventArgs e)
{
richTextBox1.Text = textBox1.Text;
richTextBox1.Text+=Environment.NewLine;
char[] wordarray = textBox1.Text.ToCharArray();
Array.Reverse(wordarray);
string s = new string(wordarray);
richTextBox1.Text += s;

}

Answer / jayakrishnan

var s1 = s.Split(' ').Reverse();
Console.WriteLine(string.Join(" " , s1.ToArray()));

Answer / mitali mishra

dim str1 as string= "i am boy"
dim str_arr() as string= str1.split(" ")
dim str2 as string
for i as integer = str_arr.length-1; i<=0; i--
str2 = str2.concat(str_arr(i) & " ")
end for
str2 = str2.removeat(str2.length-1)
str1 = str2

Answer / munagapati

string str = "I am an employee of Mindtree";
//string str1;
StringBuilder sb = new StringBuilder();
for (int i = str.Length - 1; i >= 0; i--)
{
if (str[i].Equals(' '))
{
int j = i + 1;
sb.Append(str.Substring(j).Trim());
sb.Append(" ");
str = str.Remove(j);
//while (str[j])
//{
// sb.Append(str[j].ToString());
// j++;

//}

}

}
sb.Append(str);
Console.WriteLine(sb);
Console.ReadLine();

Answer / guest

reverse()

Write a program which has a function and that function should take 2 or 3 or any number of strings and it should return the largest common prefix of all those strings. If there is no common prefix it should return an empty string. for eg:- INPUT OUTPUT glo {glory,glorious,glod} gl {glad,glow} {calendar,phone} empty string

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