Software Engineering Personal Assignment 04

"Design Ideas"

defines a 4The number of groups, respectively, isBracket[4],Numberzi[4],Numberm[4],Sign[4]. Bracketused to store parentheses,2On behalf of Double,1represents the wrong parenthesis,-1represents the closing parenthesis,-2represents the right pair,0without parentheses, initially as0;Numberzifor storing molecules,Numbermustores the denominator, Signstores symbols. Defining integral TypesSui, used to limit the length of the formula, randomly generated, value2-4.. Defining integral Typestype, the value range0-1,1represents a fractional operation. For each formula that is randomly generated, the length of theSui, forLoopsSui, GenerateNumberzi[i],Numbermu[i](When an integer, take the1),Sign[i](fromi>0start random value, range0-1, when generating symbols, determine if multiplication is required, and then extend the range of values to0-3). When a score is generated, the value range of the denominator isNumberzi-high(maximum value). When the number of loops is greater than the moment, determine the size of the two numbers before and after the symbol and operator to see if they need to be swapped for the position (to satisfy subtraction minus negative, division positive fraction).

numerator : When fractional (numbermu==1), the numerator is assigned to the shaping variable cc, for Loop cc--until the numerator and denominator divide the cc, divide the operation, and break;

parentheses: This part uses the dead method and takes all the circumstances into account. When the operation is four numbers, it is divided into three cases,1.Double brackets: There are four positions in the double parenthesis, the first number before theBracket"0"=2, "1"=-1, "2"=-1. The second number is followed by the third number, after the fourth number. 2.parentheses: The first two digits, the first three digits, the last two digits, the middle two digits, the next three digits, the first two numbers, and the last two digits. 3.no parentheses. When the number of operands is three, there are only two cases at this time:1.only one parenthesis, the first two digits, and the last two digits2.no parentheses. When the number of operands is2, there is no parenthesis.

Output: for Loops Sui , when i=0 the output is not Sign ; Judge type value, determines the format of the formula, the integer output only Numberzi , the score is all output.

Calculation: First judge the case of parentheses, single-pair ((a B) (C D), but the parentheses are counted. Double brackets left double and right double, left double: start with a double parenthesis, look for the next closing parenthesis, calculate the operation in parentheses (first multiplication, then add minus), then store the result in the position of the previous number, then move the subsequent number forward (Bracket, Sign,Numberzi,Numbermufull shift), and then calculate again until the parentheses are computed, and then look for the next parenthesis, just as the operation is pointing to no closing parenthesis; the closing parenthesis is similar. Parentheses: Computes the operation in parentheses, moving the subsequent number forward until there is no closing parenthesis. Each time an operation is performed, thesui--. No parentheses: forLoopsSui, direct operation (first multiplication, then add minus). The array is moved forward. (Note: The parentheses and the brackets are the same level, and the two end up with an operation without parentheses)

result Output: simplificationNumberzi"0"withNumbermu"0"and judging ifNumbermu"0"=1, the result is an integer, and the outputNumberzi"0"Otherwise the outputNumberzi"0"withNumbermu"0".

Result Validation : The result is converted into a string format (simplified), and the results of user input are saved in a string, comparing the two.

"Time History Table"

Date	Start time	End time	Total	Activities	Note
2016.3.28	8.00	10.00	100	Class
2016.3.29	15.20	18.00	150	Reading discussion	Write it first, in the web version.
2016.3.30	15.00	17.00	120	Design program
2016.3.31	15.30	17.40	130	Programming	Java
2016.4.4	19.00	21.00	120	Programming	Java
2016.4.5	19.00	21.30	150	Programming	Java
2016.4.6	15.00	21.00	240	Programming, finding the wrong	Eat
2016.4.7	15.30	21.00	200	Find the wrong	Eat
2016.4.9	15.00	21.00	200	Change the wrong	Eat
2016.4.10	15.00	19.00	200	Write the program as a web version	Jsp
2016.4.11	8.00	10.00	100	Class
2016.4.12	15.00	21.00	240	Continue to change the program to Web version

Software Engineering Personal Assignment 04