CallStack Help

Question

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace reoccuringletterstring

{

class Program

{

static bool checkString(string str,int len)

{

int i;

bool flag=true;

for(i=len-2;i>=0;i--)

{

if (str[i] == str[len - 1])

flag = false;

}

if(len!=0)

checkString(str,len-1);

return flag;

}

static void Main(string[] args)

{

string str1="true";

string str2 = "foo";

string str3 = "tofol";

//bool val=checkString(str1,str1.Length);

//val=checkString(str2,str2.Length);

bool val=checkString(str3,str3.Length);

}

This is program to check for reoccurrence of a character in a string

But the call stack is returning value of last pop call

I want to use value of 1st pop

is there any way to break in between call stack

theLizard · Answer

class chrCount { string c; int x; } chrCount[] charArray = new chrCount[0]; Array.Resize(ref charArray str.Length(); for(int i = 0; i { charArray[i].c = str[i]; charArray[i].x = 0; } for (int x = 0; x { for(int y = 0; y { if(charArray[y].c == str[i]) { charArray[y].x += 1; } } } does this help?

Sam Hobbs · Answer

I am sorry I think I don't understand the question; the call stack is not used for processing data. To check for a reoccurence of a character create an array of bool items; the number of elements would be the number of characters. Then use each character as an index. If the value there is false set it to true. If it is true it is a duplicate. You could instead use an array of int values that are the position of the first occurance; it could be 1-based and a value of zero would indicate no occurance of the character or it could be zero-based and a value of -1 would indicate no occurance.