Merge branch 'develop'

big-o/src/main/java/com/josdem/algorithms/PlusTimeRunner.java

@@ -0,0 +1,16 @@
+package com.josdem.algorithms;
+
+import java.util.Arrays;
+import java.util.List;
+
+/*  Type: Plus Time Algorithms – O(2a + b)
+    Description: Plus compute time algorithm
+ */
+public class PlusTimeRunner {
+
+    public List<Integer> createNewList(List<Integer> numbers) {
+        int min = numbers.stream().min(Integer::compare).orElseThrow(() -> new RuntimeException("No min value was found"));
+        int max = numbers.stream().max(Integer::compare).orElseThrow(() -> new RuntimeException("No max value was found"));
+        return Arrays.asList(new Integer[max - min + 1]);
+    }
+}

big-o/src/test/java/com/josdem/algorithms/PlusTimeRunnerTest.java

@@ -0,0 +1,22 @@
+package com.josdem.algorithms;
+
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class PlusTimeRunnerTest {
+
+    private final PlusTimeRunner plusTimeRunner = new PlusTimeRunner();
+
+    @Test
+    @DisplayName("show plus time algorithm")
+    void shouldCreateCollectionWithFixedSize(){
+        List<Integer> numbers = List.of(3, 9, 15, 2, 11, 5, 19, 6, 4, 10);
+        int expectedSize = 18;
+        assertEquals(expectedSize, plusTimeRunner.createNewList(numbers).size(), "should have expected size");
+    }
+}