76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
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#include <vector>
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#include <numeric>
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#include <iostream>
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using namespace std;
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class Fraction {
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public:
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int a, b;
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Fraction();
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Fraction(int a, int b);
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void print();
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};
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Fraction::Fraction() {
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this->a = 0;
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this->b = 1;
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}
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Fraction::Fraction(int a, int b) {
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this->a = a;
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this->b = b;
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if (this->a == 0 && this->b == 0) return;
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if (this->a >= this->b) this->a %= this->b;
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if (this->a == 0) this->b = 1;
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int divisor = gcd(this->a, this->b);
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this->a /= divisor;
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this->b /= divisor;
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}
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void Fraction::print() { cout << this->a << "/" << this->b << endl; }
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class SetOfFractions {
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private:
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vector<Fraction> data;
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public:
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bool isEmpty();
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void append(Fraction fraction);
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void exclude(Fraction fraction);
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Fraction sum();
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};
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bool SetOfFractions::isEmpty() { return this->data.size() == 0; }
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void SetOfFractions::append(Fraction fraction) {
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for (int index = 0; index < this->data.size(); index++)
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if (this->data[index].a == fraction.a && this->data[index].b == fraction.b) return;
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this->data.push_back(fraction);
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}
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void SetOfFractions::exclude(Fraction fraction) {
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for (int index = 0; index < this->data.size(); index++) {
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if (this->data[index].a == fraction.a && this->data[index].b == fraction.b) {
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this->data.erase(this->data.begin() + index);
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break;
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}
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}
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}
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Fraction SetOfFractions::sum() {
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if (isEmpty()) return Fraction(0, 0);
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int numerator = 0;
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int denominator = 1;
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for (int index = 0; index < this->data.size(); index++) {
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numerator = numerator * this->data[index].b + this->data[index].a * denominator;
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denominator *= this->data[index].b;
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}
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return Fraction(numerator, denominator);
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}
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