I need to find a string in a two dimensional array and I don't know how. The code should look like this:
...
Random x = new.Random();
Random y = new.Random();
string[,] array = new string[10,10];
{
for (int i = 0; i < 10; i++)
{
for (int j = 0; j < 10; j++)
{
array[i, j] = "";
}
}
}
array[x.Next(0,10),y.Next(0,10)] = "*";
...
The * symbol is always in a different spot and I'd like to know how do I find it. Thanks
You can find it by iterating through the array just like you did for initializing it, except instead of assigning the array index a value, you'll check it for equality:
int i = 0;
int j = 0;
bool found = false;
for (i = 0; i < 10 && !found; i++)
{
for (j = 0; j < 10; j++)
{
if (array[i, j] == "*")
{
found = true;
break;
}
}
}
if (found)
Console.WriteLine("The * is at array[{0},{1}].", i - 1, j);
else
Console.WriteLine("There is no *, you cheater.");
As an alterntive search query with LINQ:
Random xRnd = new Random(DateTime.Now.Millisecond);
Random yRnd = new Random(DateTime.Now.Millisecond);
string[,] array = new string[10, 10];
array[xRnd.Next(0, 10), yRnd.Next(0, 10)] = "*";
var result =
Enumerable.Range(0, array.GetUpperBound(0))
.Select(x => Enumerable.Range(0, array.GetUpperBound(1))
.Where(y => array[x, y] != null)
.Select(y => new { X = x, Y = y }))
.Where(i => i.Any())
.SelectMany(i => i)
.ToList();
result is a list of matches in the form of X,Y