add Problem01

realDuYuanChao · realDuYuanChao · commit 18c6ed5f59bf · 2020-10-05T14:25:19.000+08:00
diff --git a/src/main/java/com/examplehub/projecteuler/Problem01.java b/src/main/java/com/examplehub/projecteuler/Problem01.java
@@ -0,0 +1,14 @@
+package com.examplehub.projecteuler;
+
+public class Problem01 {
+
+    public static int solution1(int n) {
+        int sum = 0;
+        for (int i = 1; i < n; ++i) {
+            if (i % 3 == 0 || i % 5 == 0) {
+                sum += i;
+            }
+        }
+        return sum;
+    }
+}
diff --git a/src/test/java/com/examplehub/projecteuler/Problem01Test.java b/src/test/java/com/examplehub/projecteuler/Problem01Test.java
@@ -0,0 +1,18 @@
+package com.examplehub.projecteuler;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class Problem01Test {
+
+    @Test
+    void testSolution1() {
+
+        assertEquals(0, Problem01.solution1(-100));
+        assertEquals(0, Problem01.solution1(3));
+        assertEquals(3, Problem01.solution1(4));
+        assertEquals(23, Problem01.solution1(10));
+        assertEquals(233168, Problem01.solution1(1000));
+    }
+}
