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:
Java Program to Perform Searching Using Self-Organizing Lists
Java Program to Implement Efficient O(log n) Fibonacci generator
Java Program to Implement vector
Custom HTTP Header with the HttpClient
Handling URL Encoded Form Data in Spring REST
Guide to the Synchronized Keyword in Java
Immutable ArrayList in Java
Java Program to Implement Heap Sort Using Library Functions
Spring Cloud Connectors and Heroku
Apache Commons Collections MapUtils
Java Program to Implement Binomial Heap
Getting Started with Forms in Spring MVC
Spring Boot - Rest Template
Java Program to Solve Tower of Hanoi Problem using Stacks
Iterable to Stream in Java
Convert XML to JSON Using Jackson
Java Program to Perform Left Rotation on a Binary Search Tree
Java Program to Implement Gabow Algorithm
Remove the First Element from a List
Java Program to Implement Rope
Java Program to Implement Ford–Fulkerson Algorithm
Logout in an OAuth Secured Application
Java Program to Check Whether a Directed Graph Contains a Eulerian Cycle
OAuth2 for a Spring REST API – Handle the Refresh Token in AngularJS
Hướng dẫn Java Design Pattern – Facade
Converting Strings to Enums in Java
Map Serialization and Deserialization with Jackson
Java Program to Implement Sparse Array
Java 8 Stream API Analogies in Kotlin
Java Program to Implement Treap
Merging Streams in Java
Java Program to Implement LinkedList API