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POTrying to add the occurance of a letter in an array
 

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  1. POTrying to add the occurance of a letter in an array
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    <p>so what im doing is creating a program that reads in 2 text files, 1 is a plain text file the other is an encrypted version of the text file.</p> <p>I set the String (for every line) to uppercase and i take the char of the String index 0-65 thats where i get my position in the array.</p> <pre><code> import java.util.Scanner; import java.io.File; import java.io.FileNotFoundException; public class ReadIn { public void fileReader(){ try{ Scanner inFile1 = new Scanner(new File("plaintext.txt")); //Scanner inFile2 = new Scanner(new File("ciphertext.txt")); int lol[] = new int[27]; while(inFile1.hasNextLine()){ String base = inFile1.nextLine(); base.toUpperCase(); String placeHolder = base; for(int i=0;i&lt;base.length();i++){ if(placeHolder.charAt(0)==' '){} else if(base.charAt(0)=='.'){}else if(base.charAt(0)==','){} else if(base.charAt(0)=='"'){}else if(base.charAt(0)==':'){} else if(base.charAt(0)=='-'){}else if(base.charAt(0)=='?'){} else if(base.charAt(0)=='!'){}else{lol[(base.charAt(0)-65)]++;} placeHolder = placeHolder.substring(1); } } for(int j=0;j&lt;lol.length;j++){ System.out.println(lol[j]); //To show what is inside the Index. } }catch(FileNotFoundException e){ System.out.println("File is not in the correct directory!"); }catch(ArrayIndexOutOfBoundsException e){ System.out.println("Array Index is to small!!"); } } } </code></pre> <p>This is the output i get when i set the array size to 60</p> <blockquote> <p>142 119 0 0 0 62 60 0 682 0 0 179 24 232 0 62 0 0 0 184 0 0 440 0 63 0 0 0 0 0 0 0 471 182 215 94 60 409 0 242 174 15 30 62 273 79 405 189 0 195 472 673 101 62 324 0 124 0 0 0</p> </blockquote> <p>The question is, when I run the program, why is my array to small. If all letters are capitalized, then subtracting 65 from a char such as 'A' should be 0 and therefor add 1 to index [0] in the array.</p> <p>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</p> <p>update</p> <p>OK so i set the string to capitalize it self by "base = base = base.toUpperCase();" This worked flawlessly except that my array has to be set at 91 to compensate for the Z (90) in ascii when i try to go to the index point of the array to add i use [(base.charAt(0)-65)]++ but it throws ArrayIndexOutOfBoundsException -21</p>
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    1. USLoligans
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    1. COwhat is your question?
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    2. COSorry, The question is, when i run the program why is my array to small. if all letters are capitalized, then subtracting 65 from a char such as 'A' should be 0 and there for add 1 to index [0] in the array.
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    3. COWhat do you mean that your array is too small? Do you get an error? If so, what is it?
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      1. USCode-Apprentice
 

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