feat: kata/no-ifs-no-buts

kata/7-kyu/index.md

@@ -363,6 +363,7 @@
 - [Name That Number!](name-that-number "579ba41ce298a73aaa000255")
 - [Nice Array](nice-array "59b844528bcb7735560000a0")
 - [Nickname Generator](nickname-generator "593b1909e68ff627c9000186")
+- [No ifs no buts](no-ifs-no-buts "592915cc1fad49252f000006")
 - [Nth power rules them all!](nth-power-rules-them-all "58aed2cafab8faca1d000e20")
 - [Nth Smallest Element (Array Series #4)](nth-smallest-element-array-series-number-4 "5a512f6a80eba857280000fc")
 - [Null](null "5dd73cd4cf95d3000194617d")

kata/7-kyu/no-ifs-no-buts/README.md

@@ -0,0 +1,15 @@
+# [No ifs no buts](https://www.codewars.com/kata/no-ifs-no-buts "https://www.codewars.com/kata/592915cc1fad49252f000006")
+
+Write a function that accepts two numbers `a` and `b` and returns whether `a` is smaller than, bigger than, or equal to `b`, as a string.
+
+```
+(5, 4) ---> "5 is greater than 4"
+(-4, -7) ---> "-4 is greater than -7"
+(2, 2) ---> "2 is equal to 2"
+```
+
+There is only one problem...
+
+You cannot use `if` statements, and you cannot use the ternary operator `? :`.
+
+In fact the word `if` and the character `?` are not allowed in your code.

kata/7-kyu/no-ifs-no-buts/main/NoIfsNoButs.java

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+interface NoIfsNoButs {
+  static String noIfsNoButs(int a, int b) {
+    return a + " is " + switch (Integer.compare(a, b)) {
+      case -1 -> "smaller than ";
+      case 1 -> "greater than ";
+      default -> "equal to ";
+    } + b;
+  }
+}

kata/7-kyu/no-ifs-no-buts/test/SolutionTest.java

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+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class SolutionTest {
+  @ParameterizedTest
+  @CsvSource(textBlock = """
+       -3,   2,  -3 is smaller than 2
+        1,   2,   1 is smaller than 2
+       45,  51,  45 is smaller than 51
+        1,   1,   1 is equal to 1
+      100, 100, 100 is equal to 100
+       20,  19,  20 is greater than 19
+      100,  80, 100 is greater than 80
+      """)
+  void sample(int a, int b, String phrase) {
+    assertEquals(phrase, NoIfsNoButs.noIfsNoButs(a, b));
+  }
+}