Merge pull request #33 from Ln11211/birthday-cake-problem

Create birthday.java

Author: SarthakKeshari

Hackerrank/birthday.java

@@ -0,0 +1,37 @@
+/* You are in charge of the cake for a child's birthday. You have decided the cake will have one candle
+   for each year of their total age. They will only be able to blow out the tallest of the candles.
+   Count how many candles are tallest. A Program to input candle heights and print the total number
+   of tallest candles present on the cake*/
+import java.io.*;
+import java.util.Arrays;
+class birthday
+ {
+    int candle_count(int [] a, int x) //a method to sort and calculate the number of candles.
+    {
+         Arrays.sort(a); //to sort the elements in ascending order
+         int c=0;
+         int lst= a[x-1];
+         for(int i=x-1;i>=0;i--)
+         {
+            if(a[i]==lst)
+            {c++;}
+         }
+         return c;
+    }
+    public static void main() throws IOException
+        {
+         int ln; //a variable of integer type to store the length of array(i,e number of candles)
+         InputStreamReader inp=new InputStreamReader(System.in);  
+         BufferedReader br=new BufferedReader(inp); 
+         ln=Integer.parseInt(br.readLine());
+         int [] cdl=new int[ln]; //an array to store the candles height
+         for(int i=0;i<ln;i++)
+         {
+             cdl[i]=Integer.parseInt(br.readLine());
+             if(cdl[i]==0) //this will ensure that the input is not 0
+             i=i-1;
+         }
+         birthday obj= new birthday();
+         System.out.println(obj.candle_count(cdl,ln));
+       }
+ }