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Java-Data_Structure
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Breadcrumbs
Java-Data_Structure
/
Chapter2
/
src
/
section3
/
Term3.java
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32 lines (28 loc) · 1.1 KB
main
Breadcrumbs
Java-Data_Structure
/
Chapter2
/
src
/
section3
/
Term3.java
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package
section3
;
public
class
Term3
{
private
int
coef
;
private
int
expo
;
public
Term3
(
int
c
,
int
e
) {
coef
=
c
;
expo
=
e
;
}
// private으로 제한을 두고 getExpo()(getter)메소드를 통해서 받아올 수 있게만 한다면, 읽을 수는 있지만 쓸 수는 없게할 수 있다.
public
int
getExpo
() {
// getter
return
expo
;
}
public
int
calcTerm
(
int
x
) {
return
(
int
) (
coef
*
Math
.
pow
(
x
,
expo
));
// 계수 * x의 지수승 (자바에서 지수함수를 계산하는 방법은 Math.pow())
// pow는 double형으로 반환하는데 여기서 int로 반환하도록 설정했으니까 int형으로 캐스팅(형변환)
}
public
void
printTerm
() {
// 하나의 항을 출력하는 함수
System
.
out
.
print
(
coef
+
"x^"
+
expo
);
// 계수를 먼저 출력하고, x^ 기호 출력, 그 다음 차수 출력
// (완벽하진 않음, -x^2 ==> +-1x^2 이런식으로 출력되기 때문...)
}
// coef 변수의 데이터를 읽고, 쓸 수 있도록
public
int
getCoef
() {
// getter, accessor
return
coef
;
}
public
void
setCoef
(
int
coef
) {
// setter, mutator
this
.
coef
=
coef
;
}
}
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