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Java: Print the values of x, y where a, b, c, d, e and f are specified

Java Basic: Exercise-214 with Solution

Write a Java program which solve the equation:
ax+by=c
dx+ey=f
Print the values of x, y where a, b, c, d, e and f are given.

Input:

a,b,c,d,e,f separated by a single space.
(-1,000 ≤ a,b,c,d,e,f ≤ 1,000)

Sample Solution:

Java Code:

import java.math.BigDecimal;
import java.util.*;
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayDeque<Double> x = new ArrayDeque<Double>();
        ArrayDeque<Double> y = new ArrayDeque<Double>();
        System.out.println("Input the value of a, b, c, d, e, f:");
            int a = sc.nextInt();
            int b = sc.nextInt();
            int c = sc.nextInt();
            int d = sc.nextInt();
            int e = sc.nextInt();
            int f = sc.nextInt();             
            double t = (double)(d*c-a*f)/(d*b-a*e);
            double s = (double)(c-t*b)/a;
            x.push(s);
            y.push(t);       
        int num = x.size();
        for(int i=0;i<num;i++){
            BigDecimal bdx = new BigDecimal(x.pollLast());
            BigDecimal bdy = new BigDecimal(y.pollLast()); 
            BigDecimal ansx = bdx.setScale(4, BigDecimal.ROUND_HALF_UP);
            BigDecimal ansy = bdy.setScale(4, BigDecimal.ROUND_HALF_UP);             
            System.out.printf("%.3f", ansx.doubleValue());
            System.out.print(" ");
            System.out.printf("%.3f", ansy.doubleValue());
            System.out.println();
        }         
    }
}

Sample Output:

Input the value of a, b, c, d, e, f:
 5 6 8 9 7 4
-1.684 2.737

Flowchart:

Flowchart: Java exercises: Print the values of x, y where a, b, c, d, e and f are specified.

Java Code Editor:

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Previous: Write a Java program to check whether three given lengths (integers) of three sides form a right triangle. Print "Yes" if the given sides form a right triangle otherwise print "No".
Next: Write a Java program to compute the amount of the debt in n months. The borrowing amount is $100,000 and the loan adds 4% interest of the debt and rounds it to the nearest 1,000 above month by month.

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Java: Tips of the Day

DropElements

Removes elements in an array until the passed function returns true. Returns the remaining elements in the array.

Loop through the array, using Arrays.copyOfRange() to drop the first element of the array until the returned value from the function is true. Returns the remaining elements.

public static int[] dropElements(int[] elements, IntPredicate condition) {
    while (elements.length > 0 && !condition.test(elements[0])) {
        elements = Arrays.copyOfRange(elements, 1, elements.length);
    }
    return elements;
}

Ref: https://bit.ly/37YWqzD

 





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