Complete the following problems as part your exam. Submit the code for each function via Canvas. When submitting the code for a function, make sure the file is named accordingly. For example, when submitting the code for getRotatedPoint, the file containing the code must be named getRotatedPoint.m and must remain that regardless of you completing a new submission. If you overwrite a previous your submission in Canvas, make sure you overwrite your complete submission (i.e., submit all files every time you complete a submission even if you only are trying to update one file); otherwise, Canvas will show an incomplete submission as the last one.
As part of the exam, you are provided some examples of function calls and along with the values returned by the sample function calls. However, you are responsible for making sure your functions work under different boundary conditions that result from the range of input values possible as well as addressing the full instructions in the problem statement. The identification of boundary conditions and correctly structuring the code to handle such scenarios is a key component of the exam. Therefore, do not assume that all possible input and expected value combinations are shown, e.g., do not hardcode behaviors, your code must provide the general solution.
The function receives the x-y coordinates coords1 and coords2 that can be used to define two lines. The information that defines each line is passed as input in [x1, y1, x2, y2] form. The function returns the two angles defined by the intersection of the two lines in [smallest, largest] form. If the lines do not intersect, then the function returns [0, 0].
Function Name and Parameters
intersectionAngle(coords1, coords2)
|
Sample Function Call |
Returned |
|
intersectionAngle([5,6,9,4], [4,5,8,6]) |
[40.6013, 139.3987] |
|
intersectionAngle([6,7,8,3], [4,5,8,6]) |
[77.4712, 102.5288] |
The function receives a character array rowOfData and a number col as input. The character array rowOfData represents a row of data in a comma-separated values (CSV) format. The number col represents the column of interest within the row of data. The function returns the value (as a character array or double) associated with the column. Therefore, if the value can be represented as a double then a double must be returned; if not, a character array must be returned. If an invalid column number is passed, the function returns the MATLAB NaN value.
Function Name and Parameters
getValueAtColumn(rowOfData, col)
|
Sample Function Call |
Returned |
|
getValueAtColumn('a,b,c', 2) |
'b' |
|
getValueAtColumn('a,b,34', 3) |
[34.0000] |
|
getValueAtColumn('20.52,ced', 1) |
[20.5200] |
|
getValueAtColumn('a,b,34', 4) |
NaN |
The function receives character array cArr as input. The function sequentially evaluates every character in the array and returns the number of times there is a change in the case of the cArr characters. A non a-z/A-Z character should be treated as having the case of the last a-z/A-Z character (in left to right order).
Function Name and Parameters
caseChangeCount(cArr)
|
Sample Function Call |
Returned |
|
caseChangeCount('aBcrela') |
[2] |
|
caseChangeCount('rTREmnM') |
[3] |
|
caseChangeCount('aaaerw') |
[0] |
The function receives a character array cArr as input. The function returns a sorted version of the array (in ascending order) in which the first part of the array contains the sorted version of the lowercase characters while the second part contains the sorted version of the uppercase characters. You can assume that the character array passed as input contains only a-z or A-Z characters. Please note that only unique characters are included in the value returned.
Function Name and Parameters
sortSplitCase(cArr)
|
Sample Function Call |
Returned |
|
sortSplitCase('aaDremE') |
'aemrDE' |
|
sortSplitCase('avttea') |
'aetv' |
|
sortSplitCase('PMEDDC') |
'CDEMP' |
The function receives a character array nameStr containing a full name in uppercase, lowercase, or a mixed format as input. The function returns a character array file with the full named passed as input but formatted using sentence case. For simplicity purposes, you can assume that names only contain a-z or A-Z characters.
Function Name and Parameters
fixNameFormat(nameStr)
|
Sample Function Call |
Returned |
|
fixNameFormat('John SMITH') |
'John Smith' |
|
fixNameFormat('JANE DOE') |
'Jane Doe' |
|
fixNameFormat('JoHn SMITH') |
'John Smith' |
|
fixNameFormat('JANe DOe') |
'Jane Doe' |
|
fixNameFormat('') |
'' |
The function receives a character array myStr as input. The function returns a logical value indicating if the character array passed is symmetrical (i.e. a palindrome) or not. An empty character array passed as input must be treated as symmetrical. The presence of a non A-Z or a-z character results in the function returning an empty array. Notice that logical(1) and logical(0) are simply used to indicate that a logical value is returned; it does not mean that the function returns a character array that reads like 'logical(1)'. The function is case-sensitive.
Function Name and Parameters
isSymmetrical(myStr)
|
Sample Function Call |
Returned |
|
isSymmetrical('aba') |
logical(1) |
|
isSymmetrical('abba') |
logical(1) |
|
isSymmetrical('aara') |
logical(0) |
|
isSymmetrical('a##a') |
[] |
|
isSymmetrical('') |
logical(1) |
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