tasks a-s

Task/Pascals-triangle/Java/pascals-triangle-2.java

@@ -0,0 +1,27 @@
+public class Pas{
+	public static void main(String[] args){
+		//usage
+		pas(20);
+	}
+
+	public static void pas(int rows){
+		for(int i = 0; i < rows; i++){
+			for(int j = 0; j <= i; j++){
+				System.out.print(ncr(i, j) + " ");
+			}
+			System.out.println();
+		}
+	}
+
+	public static long ncr(int n, int r){
+		return fact(n) / (fact(r) * fact(n - r));
+	}
+
+	public static long fact(int n){
+		long ans = 1;
+		for(int i = 2; i <= n; i++){
+			ans *= i;
+		}
+		return ans;
+	}
+}