Improved readability

Chezin · web-flow · commit 7ed62a993010 · 2018-10-08T10:13:08.000-03:00
diff --git a/Others/Dijkshtra.java b/Others/Dijkshtra.java
@@ -3,59 +3,81 @@
 
 */
 
-
 import java.io.IOException;
 import java.util.Arrays;
 import java.util.Scanner;
 import java.util.Stack;
 
 public class Dijkshtra {
 
-public static void main(String[] args) throws IOException {
-	  Scanner in =new Scanner(System.in);
-	
-	int n=in.nextInt();             //n = Number of nodes or vertices
-        int m=in.nextInt();             //m = Number of Edges
-        long w[][]=new long [n+1][n+1]; //Adjacency Matrix  
-        
-	//Initializing Matrix with Certain Maximum Value for path b/w any two vertices 
-	for (long[] row: w)
-            Arrays.fill(row, 1000000l);
-	//From above,we Have assumed that,initially path b/w any two Pair of vertices is Infinite such that Infinite = 1000000l
-	//For simplicity , We can also take path Value = Long.MAX_VALUE , but i have taken Max Value = 1000000l .
-	
-	//Taking Input as Edge Location b/w a pair of vertices
-         for(int i=0;i<m;i++){
-             int x=in.nextInt(),y=in.nextInt();
-             long cmp=in.nextLong();
-             if(w[x][y]>cmp){                      //Comparing previous edge value with current value  -  Cycle Case
-            	w[x][y]=cmp; w[y][x]=cmp;        
-             }
+	public static void main(String[] args) throws IOException {
+		Scanner in = new Scanner(System.in);
+
+		// n = Number of nodes or vertices
+		int n = in.nextInt();             
+		// m = Number of Edges
+		int m = in.nextInt();         
+
+		// Adjacency Matrix
+		long w[][] = new long [n+1][n+1];   
+
+		//Initializing Matrix with Certain Maximum Value for path b/w any two vertices 
+		for (long[] row : w) {
+			Arrays.fill(row, 1000000l);
+		}
+
+		/* From above,we Have assumed that,initially path b/w any two Pair of vertices is Infinite such that Infinite = 1000000l
+		    For simplicity , We can also take path Value = Long.MAX_VALUE , but i have taken Max Value = 1000000l */
+
+		// Taking Input as Edge Location b/w a pair of vertices
+		for(int i = 0; i < m; i++) {
+		    int x = in.nextInt(),y=in.nextInt();
+		    long cmp = in.nextLong();
+
+		    //Comparing previous edge value with current value - Cycle Case
+		    if(w[x][y] > cmp) {                      
+			w[x][y] = cmp; w[y][x] = cmp;        
+		    }
+		}
+
+		// Implementing Dijkshtra's Algorithm 
+		Stack<Integer> t = new Stack<Integer>();
+		int src = in.nextInt();
+
+		for(int i = 1; i <= n; i++) {
+			if(i != src) {
+				t.push(i);
+			}
+		}
+
+		Stack <Integer> p = new Stack<Integer>();
+		p.push(src);
+		w[src][src] = 0;
+
+		while(!t.isEmpty()) {
+			int min = 989997979;
+			int loc = -1;
+
+			for(int i = 0; i < t.size(); i++) {
+				w[src][t.elementAt(i)] = Math.min(w[src][t.elementAt(i)], w[src][p.peek()] + w[p.peek()][t.elementAt(i)]);
+				if(w[src][t.elementAt(i)] <= min) {
+					min = (int) w[src][t.elementAt(i)];
+					loc = i;
+				}
+			}
+			p.push(t.elementAt(loc));
+			t.removeElementAt(loc);
+	    }
+
+		// Printing shortest path from the given source src
+		for(int i = 1; i <= n; i++) {
+			if(i != src && w[src][i] != 1000000l) {
+			System.out.print(w[src][i] + " ");
+		}
+		// Printing -1 if there is no path b/w given pair of edges
+		else if(i != src) {
+			System.out.print("-1" + " ");
+		}    
+	    }
 	}
-	
-	//Implementing Dijkshtra's Algorithm 
-	
-         Stack<Integer> t=new Stack<Integer>();
-          int src=in.nextInt();
-        for(int i=1;i<=n;i++){
-        	if(i!=src){t.push(i);}}
-        Stack <Integer> p=new Stack<Integer>();
-        p.push(src);
-        w[src][src]=0;
-         while(!t.isEmpty()){int min=989997979,loc=-1;
-        for(int i=0;i<t.size();i++){
-        	w[src][t.elementAt(i)]=Math.min(w[src][t.elementAt(i)],w[src][p.peek()]
-                +w[p.peek()][t.elementAt(i)]);
-            if(w[src][t.elementAt(i)]<=min){
-            	min=(int) w[src][t.elementAt(i)];loc=i;}
-        }
-        p.push(t.elementAt(loc));t.removeElementAt(loc);}
-	
-	//Printing shortest path from the given source src
-         for(int i=1;i<=n;i++){
-        	 if(i!=src && w[src][i]!=1000000l){System.out.print(w[src][i]+" ");}
-        	 else if(i!=src){System.out.print("-1"+" ");}    //Printing -1 if there is no path b/w given pair of edges
-         }
-         
-  }
 }
