Xây Dựng lớp PhanSo
public class PhanSo {
private int tu, mau;
PhanSo(){
tu=0;mau =1;
}
PhanSo(int t, int m){
tu =t; mau =m;
}
public int getTu() {
return tu;
}
public void setTu(int tu) {
this.tu = tu;
}
public int getMau() {
return mau;
}
public void setMau(int mau) {
this.mau = mau;
}
public String toString(){
return tu+"/"+mau;
}
public int uCLN(int a, int b){
while(a!=b)
if(a>b) a = a-b;
else b=b-a;
return a;
}
private void rutGon(){
if(tu*mau!=0){
int t = uCLN(Math.abs(tu),Math.abs(mau));
tu = tu/t; mau =mau/t;
}
}
public PhanSo cong(PhanSo b){
PhanSo c = new PhanSo();
c.tu = tu*b.mau + mau*b.tu;
c.mau = mau*b.mau;
c.rutGon();
return c;
}
public PhanSo tru(PhanSo b){
PhanSo c = new PhanSo();
c.tu = tu*b.mau - mau*b.tu;
c.mau = mau*b.mau;
c.rutGon();
return c;
}
public PhanSo nhan(PhanSo b){
PhanSo c = new PhanSo();
c.tu = tu*b.tu;
c.mau = mau*b.mau;
c.rutGon();
return c;
}
public PhanSo chia(PhanSo b){
PhanSo c = new PhanSo();
c.tu = tu*b.mau ;
c.mau = mau*b.tu;
c.rutGon();
return c;
}
}