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Write a C# program searching the first occurrence of matching string in the given string, We may say that it behaves as “string.Contains()” built in function.
1 Answer
namespace StringMatching
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Enter the string");
string s1 = Convert.ToString(Console.ReadLine()).Trim().ToUpper();
Console.WriteLine("Enter the string to be search");
string s2 = Convert.ToString(Console.ReadLine()).Trim().ToUpper();
int sourceIndex = 0;
int searcIndex = 0;
bool searchResult = false;
int matchingCount = 0;
while (sourceIndex < s1.Length)
{
if (s2[searcIndex].Equals(s1[sourceIndex]))
{
searcIndex++;
sourceIndex++;
searchResult = true;
matchingCount++;
if(matchingCount == s2.Length)
{
break;
}
}
else
{
searcIndex=0;
sourceIndex++;
searchResult = false;
}
if (sourceIndex == s1.Length) searchResult = false;
}
if(searchResult)
{
Console.WriteLine("Searching string is found");
}
else
{
Console.WriteLine("Searching string is not found");
}
Console.ReadLine();
}
}
}
Raghu GurumurthyPosted May 23, 2016, 7:03 AM