This is a java program to solve a linear equation in one variable.
Here is the source code of the Java Program to Solve any Linear Equation in One Variable. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.
//This is a java program to find the solution to the linear equation in single variable import java.util.Scanner; public class LEquation { public static void main(String args[]) { String eqn = ""; float ans = 0; float coeffSum = 0; float constSum = 0; float coeffx[] = new float[100]; float[] constant = new float[100]; Scanner in = new Scanner(System.in); System.out.println("Enter a linear equation\n"); eqn = in.nextLine(); eqn += "\n"; // System.out.println(eqn); for (int i = 0, j = 0, k = 0; i < eqn.length() - 1;) { if (eqn.charAt(i + 1) == 'x' && i < eqn.indexOf("=")) { if (i != 0 && eqn.charAt(i - 1) == '-') { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = -(Integer.parseInt(x, 10)); coeffx[j++] = n; } } else { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = Integer.parseInt(x, 10); coeffx[j++] = n; } } i += 3; } if (eqn.charAt(i + 1) == 'x' && i > eqn.indexOf("=")) { if (eqn.charAt(i - 1) == '-') { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = Integer.parseInt(x, 10); coeffx[j++] = n; } } else { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = -(Integer.parseInt(x, 10)); coeffx[j++] = n; } } i += 3; } if (eqn.charAt(i + 1) != 'x' && i < eqn.indexOf("=")) { if (eqn.charAt(i - 1) == '-') { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = -(Integer.parseInt(x, 10)); constant[k++] = n; } } else { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = Integer.parseInt(x, 10); constant[k++] = n; } } i += 2; } if (eqn.charAt(i + 1) != 'x' && i > eqn.indexOf("=")) { if (eqn.charAt(i - 1) == '-') { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = Integer.parseInt(x, 10); constant[k++] = n; } } else { String x = eqn.substring(i, i + 1); if (x != "+" && x != "-") { int n = -(Integer.parseInt(x, 10)); constant[k++] = n; } } i += 2; } } for (int i = 0; i < coeffx.length; i++) coeffSum += coeffx[i]; for (int i = 0; i < constant.length; i++) constSum += constant[i]; ans = constSum / coeffSum; System.out.println("Value of x = " + (-ans)); in.close(); } }
Output:
$ javac LEquation.java $ java LEquation Enter a linear equation 2x+5=4x+9 Value of x = -2.0
Related posts:
Working With Maps Using Streams
Java Program to Generate Random Hexadecimal Byte
REST Web service: HTTP Status Code và xử lý ngoại lệ RESTful web service với Jersey 2.x
Java Program to Implement Hash Tables with Quadratic Probing
Java Program to Check Whether an Undirected Graph Contains a Eulerian Cycle
Concatenating Strings In Java
Java Program to Implement Circular Singly Linked List
Shuffling Collections In Java
Java Program to Implement Pairing Heap
Tính trừu tượng (Abstraction) trong Java
Handle EML file with JavaMail
ETL with Spring Cloud Data Flow
Java equals() and hashCode() Contracts
Java Program to Implement Doubly Linked List
Java Program to Implement the Alexander Bogomolny’s UnOrdered Permutation Algorithm for Elements Fro...
Java Program to Implement Range Tree
Tránh lỗi ConcurrentModificationException trong Java như thế nào?
Spring 5 Testing with @EnabledIf Annotation
Từ khóa this và super trong Java
Java Program to Perform Encoding of a Message Using Matrix Multiplication
Creating a Custom Starter with Spring Boot
Ways to Iterate Over a List in Java
Mệnh đề Switch-case trong java
XML Serialization and Deserialization with Jackson
Lấy ngày giờ hiện tại trong Java
Java Program to Implement Leftist Heap
Apache Commons Collections SetUtils
JavaScript Variable scope, closure
Introduction to Spring Cloud OpenFeign
Converting String to Stream of chars
Java Program to Implement Gift Wrapping Algorithm in Two Dimensions
Java Program to Find Nearest Neighbor for Static Data Set