2020-12-08 Update: Added "Count Odd Numbers below n" and "Last"

Author: fartem

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: Java CI with Gradle
+name: Build
 
 on:
  push:

README.md

@@ -31,6 +31,7 @@ Profile on Codewars: [fartem](https://www.codewars.com/users/fartem).
 | Convert number to reversed array of digits | [Link](https://www.codewars.com/kata/5583090cbe83f4fd8c000051) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/ConvertNumberToReversedArrayOfDigits.java) |
 | Convert to Binary | [Link](https://www.codewars.com/kata/59fca81a5712f9fa4700159a) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/ConvertToBinary.java) |
 | Counting sheep... | [Link](https://www.codewars.com/kata/54edbc7200b811e956000556) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/CountingSheep.java) |
+| Count Odd Numbers below n | [Link](https://www.codewars.com/kata/59342039eb450e39970000a6) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/CountOddNumbersBelowN.java) |
 | Count of positives / sum of negatives | [Link](https://www.codewars.com/kata/576bb71bbbcf0951d5000044) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/CountOfPositivesSumOfNegatives.java) |
 | Count the Monkeys! | [Link](https://www.codewars.com/kata/56f69d9f9400f508fb000ba7) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/CountTheMonkeys.java) |
 | Even or Odd | [Link](https://www.codewars.com/kata/53da3dbb4a5168369a0000fe) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/EvenOrOdd.java) |
@@ -114,6 +115,7 @@ Profile on Codewars: [fartem](https://www.codewars.com/users/fartem).
 | Insert dashes | [Link](https://www.codewars.com/kata/55960bbb182094bc4800007b) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/InsertDashes.java) |
 | Inspiring Strings | [Link](https://www.codewars.com/kata/5939ab6eed348a945f0007b2) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/InspiringStrings.java) |
 | Is valid identifier? | [Link](https://www.codewars.com/kata/563a8656d52a79f06c00001f) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/IsValidIdentifier.java) |
+| Last | [Link](https://www.codewars.com/kata/541629460b198da04e000bb9) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/Last.java) |
 | Lunar Mathematics: Addition | [Link](https://www.codewars.com/kata/5c4b5f06b1fd9b3fec8cb03e) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/LunarMathematicsAddition.java) |
 | Make a function that does arithmetic! | [Link](https://www.codewars.com/kata/583f158ea20cfcbeb400000a) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/MakeAFunctionThatDoesArithmetic.java) |
 | max diff - easy | [Link](https://www.codewars.com/kata/588a3c3ef0fbc9c8e1000095) | [Link](./src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/MaxDiffEasy.java) |

src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu7/Last.java

@@ -0,0 +1,21 @@
+package com.smlnskgmail.jaman.codewarsjava.kyu7;
+
+import java.util.List;
+
+// https://www.codewars.com/kata/541629460b198da04e000bb9
+public class Last {
+
+ public static <T> T last(final List<T> list) {
+ return list.get(list.size() - 1);
+ }
+
+ public static char last(final String string) {
+ return string.charAt(string.length() - 1);
+ }
+
+ @SafeVarargs
+ public static <T> T last(final T... list) {
+ return list[list.length - 1];
+ }
+
+}

src/main/java/com/smlnskgmail/jaman/codewarsjava/kyu8/CountOddNumbersBelowN.java

@@ -0,0 +1,16 @@
+package com.smlnskgmail.jaman.codewarsjava.kyu8;
+
+// https://www.codewars.com/kata/59342039eb450e39970000a6
+public class CountOddNumbersBelowN {
+
+ private final int input;
+
+ public CountOddNumbersBelowN(int input) {
+ this.input = input;
+ }
+
+ public int solution() {
+ return input / 2;
+ }
+
+}

src/test/java/com/smlnskgmail/jaman/codewarsjava/kyu7/LastTest.java

@@ -0,0 +1,51 @@
+package com.smlnskgmail.jaman.codewarsjava.kyu7;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+import static org.junit.Assert.assertEquals;
+
+public class LastTest {
+
+ @Test
+ public void testList() {
+ assertEquals(
+ 5,
+ (int) Last.last(
+ Arrays.asList(1, 2, 3, 4, 5)
+ )
+ );
+ }
+
+ @Test
+ public void testString() {
+ assertEquals(
+ 'e',
+ Last.last(
+ "abcde"
+ )
+ );
+ }
+
+ @Test
+ public void testArgs() {
+ assertEquals(
+ 5,
+ (int) Last.last(
+ 1, 2, 3, 4, 5
+ )
+ );
+ }
+
+ @Test
+ public void testArray() {
+ assertEquals(
+ 5,
+ (int) Last.last(
+ new Integer[]{1, 2, 3, 4, 5}
+ )
+ );
+ }
+
+}

src/test/java/com/smlnskgmail/jaman/codewarsjava/kyu8/CountOddNumbersBelowNTest.java

@@ -0,0 +1,21 @@
+package com.smlnskgmail.jaman.codewarsjava.kyu8;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class CountOddNumbersBelowNTest {
+
+ @Test
+ public void fixedTests() {
+ assertEquals(
+ 7,
+ new CountOddNumbersBelowN(15).solution()
+ );
+ assertEquals(
+ 7511,
+ new CountOddNumbersBelowN(15023).solution()
+ );
+ }
+
+}