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problem with character space (character search)

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snehula snehula is offline Offline
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problem with character space (character search)

 
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  #1
Nov 5th, 2009
Hi :-)

Yeah I'm new to this whole thing, that's why I'm probably going to ask a lot of stupid questions, I apologize in advance..
The story is: I'm writing a program to enter a string and a search character and output the number of times this character occured in the string.

Java Syntax (Toggle Plain Text) 
  1.     // s for string and c for search character
  2. 	int i = 0;
  3. 	int result = 0; //number of occurences
  4.         for(i = 0; i < s.length(); i++)
  5. 	{
  6. 		if (s.charAt(i) == c) //
  7. 			result++;
  8. 	}

Everything is fine, but I haven't got a clue how to handle the situation where the search character is a space (or other special characters i guess)..
Thanks for the help :-)
Last edited by peter_budo; Nov 5th, 2009 at 9:02 am. Reason: Keep It Organized - For easy readability, always wrap programming code within posts in [code] (code blocks)
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  #2
Nov 5th, 2009
You've written a program to count the specific character given c. This character may also be a space. How much can be different characters in your text? Each character has its representation as an integer.
Create an array of sufficient numbers of cells, and then in a single loop process, increase a value of a cell at the index, where index is the integer representation of char. (base ascii set of chars 0-255)
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snehula snehula is offline Offline
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hmm..

 
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  #3
34 Days Ago
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Originally Posted by quuba View Post
You've written a program to count the specific character given c. This character may also be a space. How much can be different characters in your text? Each character has its representation as an integer.
Create an array of sufficient numbers of cells, and then in a single loop process, increase a value of a cell at the index, where index is the integer representation of char. (base ascii set of chars 0-255)
What you're saying is get the index position of the given character (is it?), which i had to do for another program.. this one only has to count how many times the character occurs in the input string.
Anyway, my problem is not that I can't count the occurences or find the index positions of the character.
It's all working fine but it won't let me enter space as a search character. I don't know if I'm supposed to reference space some other way but anyway, this is supposed to be a simple little program where the user can enter any search character they like. Apparently the space key is a special character..
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  #4
33 Days Ago
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but it won't let me enter space as a search character
Your program
Java Syntax (Toggle Plain Text) 
  1.     // s for string and c for search character
  2. 	int i = 0;
  3. 	int result = 0; //number of occurences
  4.         for(i = 0; i < s.length(); i++)
  5. 	{
  6. 		if (s.charAt(i) == c) //
  7. 			result++;
  8. 	}
define
Java Syntax (Toggle Plain Text) 
  1. char c = ' ';
  2. String s = "space space";
and run
This piece of code does not discriminate spaces
Look in your code places where space is removed
Last edited by quuba; 33 Days Ago at 7:50 pm.
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snehula snehula is offline Offline
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auch!

 
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  #5
31 Days Ago
silly me :-)))
problem was that i was using a class for keyboard input that trims space..
sorry for the trouble :-))) thnx
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  #6
30 Days Ago
You gave advice.
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