Solved-Project 01- Solution

Description

1. Problem Statement

Create an original version of the ​string​class named ​myString​. Each instance of ​myString​will be able to handle 25 characters and each method will need to contain a reference “status variable”.

2. Requirements

2.1 Assumptions

• Default ​string​class may be used for screen input

• Default ​string​class may be used for ​setString​method

• User will not input strings that include spaces

2.2 Specifications

• Functions to replicate

• • size​()

  • addStart​()

• • addEnd​()

• • partString​()

• • replPartString​()

• • replWholeString​()

• • compareString​()

• • initString​()

• • setString​()

• • getString​()

• • printStringScreen​()

• • numericString​()

• • alphabeticString​()

• Program will test each function systematically

• • Some results will be shown to the user

• • Some results will be printed to a file

• • May allow for methods to be tested out of order/individually

3. Decomposition Diagram

3. • myString​Class Program

     • Input

3. • • • User inputs string under 25 characters

3. • • • User inputs via command line

3. • • Process

3. • • • Count the number of characters in a string

3. • • • Iterate character array to append beginning

3. • • • Iterate through array to append to end

3. • • • Replace part of array from given position

3. • • • Replace entire array of characters

3. • • • Compare given array with saved array

3. • • • Initialize/Wipe string to ​null

       • Insert ​string ​into ​myString

3. • • • Determine if string is integer or real number

3. • • • Determine if string is alphabetic exclusively

3. • • Output

3. • • • Iterate and return portion of string from any start point

3. • • • Return and print current array of characters

3. Test Strategy

3. • Valid Data

3. • Invalid Data

3. Test Plan Version 1

Test Strategy	#	Description	Input	Expected Output	Actual Output	Pass/Fail
Valid Data	1	size​()
Valid Data	2	addStart​()
Valid Data	3	addEnd​()
Valid Data	4	partString​()
Valid Data	5	replPartString​()
Valid Data	6	compareString​()
Valid Data	7	initString​()

Valid Data	8	setString​()
Valid Data	9	getString​()
Valid Data	10	printStringScreen​()
Valid Data	11	numericString​()
Valid Data	12	alphabeticString​()
Invalid Data	1	addStart​()
Invalid Data	2	addEnd​()
Invalid Data	3	partString​()
Invalid Data	4	replPartString​()
Invalid Data	5	replWholeString​()
Invalid Data	6	compareString​()
Invalid Data	7	setString​()
Invalid Data	8	getString​()
Invalid Data	9	printStringScreen​()

6. Initial Algorithm

6. 1. Create Class ​myString

      1. Create Function ​size​()

6. 1. 1. 1. Return number of characters in string

6. 1. 1. 2. Count all non-null characters and add to ​total

      2. Create Function ​addStart​(myString)

6. 1. 1. 1. Add input to beginning of string

6. 1. 1. 2. Move current characters forward and insert

6. 1. 3. Create Function ​addEnd​(myString)

         1. Append string with input

6. 1. 1. 2. Insert characters to end up to 25

6. 1. 4. Create Function ​partString​(startPos, length)

         1. Return portion of string from inputted index

6. 1. 1. 2. Take in index integer and iterate from there

6. 1. 5. Create Function ​replPartString​(myString, startPos)

         1. Replace portion of string from inputted index

6. 1. 1. 2. Take in index of string and replace

1. 1. 6. Create Function ​replWholeString​(myString)

         1. Replace entire string with user input

1. 1. 6. 2. Wipe string and insert characters

1. 1. 6. Create Function ​compareString​(myString)

         1. Compare current string to user input

1. 1. 6. 2. Iterate both and check each index

1. 1. 6. Create Function ​initString​()

         1. Wipe/Initialize string to null

1. 1. 6. 2. Iterate and clear each index

1. 1. 6. Create Function ​setString​(string)

         1. Set string to current input

1. 1. 6. 2. Iterate and fill each index with corresponding index

1. 1. 6. Create Function ​getString​()

         1. Return current string

1. 1. 6. 2. Iterate and return each index into string

1. 1. 6. Create Function ​printStringScreen​()

         1. Print current string to screen

1. 1. 6. 2. Iterate and print each index

1. 1. 6. Create Function ​numericString​()

         1. Determine if string is integer or real number

1. 1. 6. 2. Iterate and check for numeric or real number characters in correct order

1. 1. 6. Create Function ​alphabeticString​()

         1. Determine if string is all alphabetic

1. 1. 6. 2. Iterate and check for alpha characters

1. 2. Create Function ​outputFile​()

      1. Will print results of each function in class ​myString​to file

1. 2. MAIN ​FUNCTION

1. 2. 1. Test each function of class ​myString

1. 2. 2. Print results of each function to file with ​outputFile​().

7. Test Plan Version 2

Test Strategy	#	Description	Input	Expected Output	Actual Output	Pass/Fail
Valid Data	1	size​()	“string”	6
Valid Data	2	addStart​()	“my“	“mystring”
Valid Data	3	addEnd​()	“s”	“mystrings”
Valid Data	4	partString​()	0, 5	“mystr”
Valid Data	5	replPartString​()	3, “Test”	“myTest”

Valid Data	6	compareString​()	“mystring” “test”	FALSE
Valid Data	7	initString​()	null	null string
Valid Data	8	setString​()	“mystr” ​string	“mystr” ​myString
Valid Data	9	getString​()	“mystr” ​myString	“mystr” ​string
Valid Data	10	printStringScreen​()	“mystr”	“mystr” Print
Valid Data	11	numericString​()	“6.502”	TRUE
Valid Data	12	alphabeticString​()	“abc”	TRUE
Invalid Data	1	addStart​()	“abcd…z”	overflow
Invalid Data	2	addEnd​()	“zyxw…a”	overflow
Invalid Data	3	partString​()	“-1, 5”	Invalid Index
Invalid Data	4	replPartString​()	“my“, -1	Invalid Index
Invalid Data	5	replWholeString​()	“abc…z”	overflow
Invalid Data	6	compareString​()	“”	null
Invalid Data	7	setString​()	“”	null
Invalid Data	8	getString​()	“”	null – empty
Invalid Data	9	printStringScreen​()	“”	null – empty

12. Error Log

Error Type (Logic/Runtime)	Cause of Error	Solution to Error
Logic	Casting charArray to double	None at the moment.
	within numericString() give
	correct answer every time
	except with input = 0

13. Status

Program is working.