Simple Adding

Author: ardallie

src/easy/SimpleAdding.java

@@ -0,0 +1,33 @@
+package easy;
+
+/**
+ * Have the function SimpleAdding(num) add up all the numbers from 1 to num.
+ * For example: if the input is 4 then your program
+ * should return 10 because 1 + 2 + 3 + 4 = 10.
+ * For the test cases, the parameter num will be any number from 1 to 1000.
+ */
+public class SimpleAdding {
+
+ /**
+ * Simple Adding function.
+ *
+ * @param num input number
+ * @return the sum of numbers
+ */
+ private static int simpleAdding(int num) {
+ return num * (num + 1) / 2;
+ }
+
+ /**
+ * Entry point.
+ *
+ * @param args command line arguments
+ */
+ public static void main(String[] args) {
+ var result1 = simpleAdding(100);
+ System.out.println(result1);
+ var result2 = simpleAdding(8);
+ System.out.println(result2);
+ }
+
+}