package com.company;


import java.text.DecimalFormat;

public class Vector {
    private int x_;
    private int y_;
    private int z_;

    Vector(int x, int y, int z) {
        x_ = x;
        y_ = y;
        z_ = z;
    }

    void calculateLength() {
        String formattedDouble = new DecimalFormat("#0.00").format(Math.sqrt(Double.valueOf(x_ * x_ + y_ * y_ + z_ * z_)));
        System.out.println("length = " + formattedDouble);
    }

    double calculate() {
        return (Math.sqrt(Double.valueOf(x_ * x_ + y_ * y_ + z_ * z_)));
    }

    void print() {
        System.out.println("(" + x_ + " , " + y_ + " , " + z_ + ")");
    }

    Vector sumOfVectors(Vector vector) {
        return new Vector(this.x_ + vector.x_, this.y_ + y_, this.z_ + vector.z_);
    }

    Vector differenceOfVectors(Vector vector) {
        return new Vector(
                this.x_ - vector.x_, this.y_ - y_, this.z_ - vector.z_
        );
    }

    int scMultiplyOfVector(Vector vector) {
        return this.x_ * vector.x_ + this.y_ * y_ + this.z_ * vector.z_;
    }

    double vcMultiplyOfVectors(Vector vector) {
        return this.scMultiplyOfVector(vector) * this.foundSin(vector);
    }

    double foundCos(Vector vector) {
        return (this.scMultiplyOfVector(vector) / (this.calculate() * vector.calculate()));
    }

    double foundSin(Vector vector) {
        return Math.sqrt(1 - this.foundAngle(vector) * this.foundAngle(vector));
    }

    int foundAngle(Vector vector) {
        return (int) Math.acos((this.scMultiplyOfVector(vector) / (this.calculate() * vector.calculate())));
    }
}