add day 17

Author: stakenschneider

src/main/java/HackerRank/thirtyDaysOfCode/Day_17.java

@@ -0,0 +1,40 @@
+package hackerRank.thirtyDaysOfCode;
+
+import java.util.*;
+// More Exceptions
+class Day_17{
+    public static void main(String[] args) {
+        Scanner in = new Scanner(System.in);
+        int t = in.nextInt();
+        while (t-- > 0) {
+
+            int n = in.nextInt();
+            int p = in.nextInt();
+            Calculator myCalculator = new Calculator();
+            try {
+                int ans = myCalculator.power(n, p);
+                System.out.println(ans);
+            }
+            catch (Exception e) {
+                System.out.println(e.getMessage());
+            }
+        }
+        in.close();
+    }
+
+    private static class Calculator {
+        private int power(int n, int p) throws Exception {
+            if (n < 0 || p < 0) {
+                throw new Exception("n and p should be non-negative");
+            }
+            if (p == 0) {
+                return 1;
+            }
+            int res = n;
+            for (int i = 1; i < p; i++) {
+                res = res * n;
+            }
+            return res;
+        }
+    }
+}