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Java Assignment 3
Commit 5aa4b593 authored by Bran's avatar Bran
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commented up, completed and fixed

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src/AssessmentPartThree.java
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......@@ -21,81 +21,50 @@ public class AssessmentPartThree {
// Lower case characters remain lower case, upper case remain upper case
// Any other characters are returned unchanged
char[] alphabet = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
boolean upperChar;
int letterPlace = 0;
char[] alphabet = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'}; // creates an array string string containing each letter of the alphabet
boolean upperCaseCharacter; //creates a boolean caleld uppercasecharacter
int letterPlace = 0; //creates an int called letterplace and assigns it a value of 0
upperChar = Character.isUpperCase(theChar);
theChar = Character.toLowerCase(theChar);
upperCaseCharacter = Character.isUpperCase(theChar); // makes uppercasecharacter equal to the uppercse value of theChar
theChar = Character.toLowerCase(theChar); //makes theChar equal to the lowercase value of theChar
for (int i = 0 ; i < alphabet.length; i++)
for (int i = 0 ; i < alphabet.length; i++) // creates a for loop that runs as long as i is less than the length of the array string alphabet
{
if (theChar == alphabet[i])
if (theChar == alphabet[i]) // if thechar is equal to the i'th value of alphabet
{
theOffset = theOffset + i;
break;
theOffset = theOffset + i; //makes the offset equal to theoffset plus the value of i
}
}
if (Character.isLetter(theChar))
if (Character.isLetter(theChar)) //if theChar is a Letter
{
if (theOffset < 0)
if (theOffset < 0) // if the value of theOffset is less than 0
{
theOffset = theOffset + 26;
theOffset = theOffset + 26; //makes theOffset equal to theOffset plus 26
}
if (theOffset > alphabet.length)
if (theOffset > alphabet.length) // if the value of theOfset is greater than the length of the string alphabet
{
theOffset = theOffset - 26;
theOffset = theOffset - 26; //makes theOffset equal to theOffset - 26
}
else
else //if none of the above if statements were met
{
theChar = alphabet[theOffset];
theChar = alphabet[theOffset]; //makes thechar equal to the character in alphabet equal to the value of the offset
}
}
else
else //if the previous if statement is not met
{
return theChar;
return theChar; //return the value of theChar
}
if (upperChar)
if (upperCaseCharacter) // if uppercasecharacter has a value
{
theChar = Character.toUpperCase(theChar);
theChar = Character.toUpperCase(theChar); //makes thechar equal to the uppercase value of thechar
}
return theChar;
return theChar; //returns thechar
}
/* String lowerbet = "abcdefghijklmnopqrstuvwxyz"; //creates a string containing all the letter of the alphabet in lowercase
String capitalbet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; // creates a string containing all the letters of the alphabet in uppercase
for (int i = 0; i < lowerbet.length(); i++) // creates a for loop that declares a variable called I, then iterates until i is greater than the length of the string lowerbet (in this case it would be 26)
{
if (theChar == lowerbet.charAt(i)) // creates an if statement that triggers if the character in theChar is equal to the ith value of the string lowerbet
{
char newnumber = lowerbet.charAt(theOffset + i); // assigns character equal to the character at the value of offset + the value of I of the string lowerbet to a char called newnum
return newnumber; // returns the value of newnum
}
if (theChar == capitalbet.charAt(i)) // if the value of theChar is equal to the i'th character of the string capitalbet
{
char newnumber = capitalbet.charAt(theOffset + i); // assigns character equal to the character at the value of offset + the value of i
return newnumber; //returns the value of newnum
}
}
char newnumber = theChar; // assigns the value of theChar to newnum
return newnumber; // returns the value of newnum
}
*/
///////////////////////////////////////////////////////////////////////
......@@ -110,50 +79,13 @@ public class AssessmentPartThree {
String output = "";
for (char letter : theMessage.toCharArray())
for (char letter : theMessage.toCharArray()) //creates a or loop that iterates the char "letter" through theMessage.tochararray
{
letter = enryptedCharacter( letter, theOffset);
output = output + letter;
letter = enryptedCharacter( letter, theOffset); // makes letter equal to the value obtained when running the value of theMessage through the encryptedcharacter method above
output = output + letter; // makes output equal to output + letter
}
return output;
/* StringBuilder string = new StringBuilder(); //creates an empty StringBuilder called String
char j ; // creates an empty char called j
for (int i = 0; i < theMessage.length(); i++) // creates a for loop that iterates until i is greater then the length of whatever is stored in the string "theMessage"
{
j = theMessage.charAt(i); // makes j equal to the i'th character of theMessage
if (Character.isLetter(j)) // if the value assigned to j is a letter runs the following
{
j = (char) (theMessage.charAt(i) + theOffset); // makes j a char equal to the i'th value of theMessage + the value of the offset
}
if ((Character.isLowerCase(theMessage.charAt(i))) && j > 'z') // if the i'th character of theMessage is lowercase and the value stored in j is greater than the lowercase value of z
{
j = (char) (theMessage.charAt(i) - (theOffset - 26)); // makes j equal to the value of i'th character of themessage minus the value of theoffset minus 26
}
if (Character.isUpperCase(theMessage.charAt(i)) && j > 'Z') // if the i'th character of theMessage is uppercasecase and the value stored in j is greater than the uppercase value of z
{
j = (char) (theMessage.charAt(i) - (theOffset - 26)); //makes j equal to the i'th character of themessage minus the value of theOffset, minus 26
}
if (Character.isUpperCase(theMessage.charAt(i)) && j < 'A') // if the i'th character of theMessage is uppercasecase and the value stored in j is less than the uppercase value of A
{
j = (char) (theMessage.charAt(i) + (theOffset + 26)); // makes j equal to the i'th character of themessage plus the value of the offset plus 26
}
if ((Character.isLowerCase(theMessage.charAt(i)) && j < 'a')) // if the i'th character of theMessage is lowercase and the value stored in j is less than the lowercase value of a
{
j = (char) (theMessage.charAt(i) + (theOffset + 26)); // makes j equal to the i'th character of themessage plus the value of the offset plus 26
}
string.append (j); // returns string with the value of j added too it
}
return string.toString(); // returns a string containing whatever is stored in the stringbuilder "string" */
return output; // returns the value of output
}
}
......
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