day15 (#155)

day15/Java/PascalTriangle.java

@@ -0,0 +1,37 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package recursion;
+
+/**
+ * @date 09/01/19
+ * @author SPREEHA DUTTA
+ */
+import java.util.*;
+public class PascalTriangle {
+    public static int pascal(int r,int c)
+    {
+        if(r==c || c==0)
+            return 1;
+        else
+            return pascal(r-1,c)+pascal(r-1,c-1);
+    }
+    public static void print(int n)
+    {
+        for(int i=0;i<n;i++)
+        {
+            for(int j=0;j<=i;j++)
+                System.out.print(pascal(i,j)+" ");
+            System.out.println();
+        }
+    }
+     public static void main(String []args)
+     {
+         Scanner sc=new Scanner(System.in);
+         int n;
+         n=sc.nextInt();
+         print(n);
+     }
+}

day15/README.md

@@ -216,5 +216,41 @@ def main():
     print(f'Pascal triangle cannot have {num} rows')
 
 main()
+```
+
+## Java Implementation
+
+### [Solution](./Java/PascalTriangle.java)
 
+```java
+/**
+ * @date 09/01/19
+ * @author SPREEHA DUTTA
+ */
+import java.util.*;
+public class PascalTriangle {
+    public static int pascal(int r,int c)
+    {
+        if(r==c || c==0)
+            return 1;
+        else
+            return pascal(r-1,c)+pascal(r-1,c-1);
+    }
+    public static void print(int n)
+    {
+        for(int i=0;i<n;i++)
+        {
+            for(int j=0;j<=i;j++)
+                System.out.print(pascal(i,j)+" ");
+            System.out.println();
+        }
+    }
+     public static void main(String []args)
+     {
+         Scanner sc=new Scanner(System.in);
+         int n;
+         n=sc.nextInt();
+         print(n);
+     }
+}
 ```