tasks a-s

Task/Pascals-triangle/Java/pascals-triangle-1.java

@@ -0,0 +1,21 @@
+import java.util.ArrayList;
+...//class definition, etc.
+public static void genPyrN(int rows){
+	if(rows < 0) return;
+	//save the last row here
+	ArrayList<Integer> last = new ArrayList<Integer>();
+	last.add(1);
+	System.out.println(last);
+	for(int i= 1;i <= rows;++i){
+		//work on the next row
+		ArrayList<Integer> thisRow= new ArrayList<Integer>();
+		thisRow.add(last.get(0)); //beginning
+		for(int j= 1;j < i;++j){//loop the number of elements in this row
+			//sum from the last row
+			thisRow.add(last.get(j - 1) + last.get(j));
+		}
+		thisRow.add(last.get(0)); //end
+		last= thisRow;//save this row
+		System.out.println(thisRow);
+	}
+}