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----------Evaluator-java---------------- package evaluator- import j.docx
**********Evaluator.java****************
package evaluator;
import java.util.*;
import operand.Operand;
import operator.Operator;
public class Evaluator {
private Stack<Operand> operandStack;
private Stack<Operator> operatorStack;
private StringTokenizer tokenizer;
private static final String DELIMITERS = "+-*^/() ";
public Evaluator() {
operandStack = new Stack<Operand>();
operatorStack = new Stack<Operator>();
}
public int eval(String expression) {
int result = 0;
String token;
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String delimiters = "+-*/#!";
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} else {
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}
// TODO Operator is abstract - this line will need to be fixed:
// ( The Operator class should contain an instance of a HashMap,
// and values will be instances of the Operators. See Operator class
// skeleton for an example. )
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// method
return 0;
}
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* Class to help test your Evaluator:
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*/
public static void main(String[] args) {
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for (String arg : args) {
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************************************Operand.Java**************************************************
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----------Evaluator-java---------------- package evaluator- import j.docx
**********Evaluator.java****************
package evaluator;
import java.util.*;
import operand.Operand;
import operator.Operator;
public class Evaluator {
private Stack<Operand> operandStack;
private Stack<Operator> operatorStack;
private StringTokenizer tokenizer;
private static final String DELIMITERS = "+-*^/() ";
public Evaluator() {
operandStack = new Stack<Operand>();
operatorStack = new Stack<Operator>();
}
public int eval(String expression) {
int result = 0;
String token;
Operator hashOpr = Operator.operators.get("#");
oprStack.push(hashOpr);
String delimiters = "+-*/#!";
// The 3rd argument is true to indicate that the delimiters should be used
// as tokens, too. But, we'll need to remember to filter out spaces.
this.tokenizer = new StringTokenizer(expression, DELIMITERS, true);
while (this.tokenizer.hasMoreTokens()) {
// filter out spaces
if (!(token = this.tokenizer.nextToken()).equals(" ")) {
// check if token is an operand
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operandStack.push(new Operand(token));
} else {
if (!Operator.check(token)) {
System.out.println("*****invalid token******");
System.exit(1);
}
// TODO Operator is abstract - this line will need to be fixed:
// ( The Operator class should contain an instance of a HashMap,
// and values will be instances of the Operators. See Operator class
// skeleton for an example. )
Operator newOperator = null; // new Operator( token );
while (operatorStack.peek().priority() >= newOperator.priority()) {
// note that when we eval the expression 1 - 2 we will
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}
// Control gets here when we've picked up all of the tokens; you must add
// code to complete the evaluation - consider how the code given here
// will evaluate the expression 1+2*3
// When we have no more tokens to scan, the operand stack will contain 1 2
// and the operator stack will have + * with 2 and * on the top;
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// evaluating the operator stack until empty
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// method
return 0;
}
/**
* Class to help test your Evaluator:
* javac EvaluatorTester
* java EvaluatorTester "1+2" "3*5"
*/
public static void main(String[] args) {
Evaluator evaluator = new Evaluator();
for (String arg : args) {
System.out.format("%s = %d\n", arg, evaluator.eval(arg));
}
}
}
************************************Operand.Java**************************************************
package operand;
public class Operand {
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***During period of illness - infection can easily be spread. It is also possible to spread infection during the incubation and convalescence periods as well. Ex. Typhoid fever and cholera - the convalescing person can carry the disease for months or years. Define the following: Incidence of disease - Prevalence of disease - Define and give examples of the following: Sporadic disease - Endemic disease - Epidemic disease - Pandemic disease -
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= yoars (Round to two decimal places as needed)
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This person, role, or group will be a subject matter expert who can provide information useful to complete the task or deliverable. Two-way communication methods are deployed to be keep in contact with these stakeholders.
Responsible
Accountable
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Informed
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: conducted to help determine if an organism expressing a dominant phenotype is heterozygous or homozygous : cyclic series of enzymatic reactions that occur in the stroma of the chloroplast; results in reduction of CO 2 and the formation of glucose. : cyclic series of enzymatic reactions that occurs in the mitochondrial matrix; second major stage of cellular respiration. : antigen binding to specific receptors on lymphocytes of adaptive immunity; can lead to cellular activation, proliferation, and formation of immunological : cell "eating"; process of innate immunity whereby scavenger cells engulf and degrade invading microorganisms. : lymphocyte of innate immunity that kills infected or diseased cells; important in the protection against viruses. : composed of DNA and positively charged DNA binding proteins : important mechanism of innate immunity, characterized by symptoms of heat, swelling, redness and pain. : derived from retroviruses, useful in recombinant DNA technology for creating cDNA. : brain compartment associated with integration of optical nerve signals from the eyes into visual perceptions.
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