Java Program To Solve Gauss Elimination Method

Code Here:

import java.util.*;
import java.math.*;
class gauss elimination
{
 public static void main(String args[])
 {
  Scanner sc = new Scanner(System.in);
  float r11,r12,r13,r14,r21,r22,r23,r24,r31,r32,r33,r34;
  float s11,s12,s13,s14,t21,t22,t23,t24,u31,u32,u33,u34,v21,v22,v23,v24,w32,w33,w34,x,y,z;
  System.out.print("Find the value using gauss elimination method \n");
  System.out.print("Enter 4 element in 1st row= ");
  r11=sc.nextFloat();
  r12=sc.nextFloat();
  r13=sc.nextFloat();
  r14=sc.nextFloat();
  System.out.print("Enter 4 element in 2nd row= ");
  r21=sc.nextFloat();
  r22=sc.nextFloat();
  r23=sc.nextFloat();
  r24=sc.nextFloat();
  System.out.print("Enter 4 element in 3rd row= ");
  r31=sc.nextFloat();
  r32=sc.nextFloat();
  r33=sc.nextFloat();
  r34=sc.nextFloat();
  s11=r11/r11;
  s12=r12/r11;
  s13=r13/r11;
  s14=r14/r11;
  t21=r21-(r21*s11);
  t22=r22-(r21*s12);
  t23=r23-(r21*s13);
  t24=r24-(r21*s14);
  u31=r31-(r31*s11);
  u32=r32-(r31*s12);
  u33=r33-(r31*s13);
  u34=r34-(r31*s14);
  v22=t22/t22;
  v23=t23/t22;
  v24=t24/t22;
  w32=u32-(u32*v22);
  w33=u33-(u32*v23);
  w34=u34-(u32*v24);   
  z=w34/w33;
  y=v24-(v23*z);
  x=s14-(s12*y)-(s13*z);
  System.out.print("\nSTEP-1= "+r11+"\t"+r12+"\t"+r13+"\t"+r14);
  System.out.print("\n        "+r21+"\t"+r22+"\t"+r23+"\t"+r24);
  System.out.print("\n        "+r31+"\t"+r32+"\t"+r33+"\t"+r34);
  System.out.print("\nSTEP-2= "+s11+"\t"+s12+"\t"+s13+"\t"+s14);
  System.out.print("\n        "+t21+"\t"+t22+"\t"+t23+"\t"+t24);
  System.out.print("\n        "+u31+"\t"+u32+"\t"+u33+"\t"+u34);
  System.out.print("\nSTEP-3= "+s11+"\t"+s12+"\t"+s13+"\t"+s14);
  System.out.print("\n        "+t21+"\t"+v22+"\t"+v23+"\t"+v24);
  System.out.print("\n        "+u31+"\t"+w32+"\t"+w33+"\t"+w34);
  System.out.print("\nx=  "+x);
  System.out.print("\ny=  "+y);
  System.out.print("\nz=  "+z);
 } 
}

Output: