feat: kata/a-snail-enters-a-bar

docs/README.md

@@ -1,7 +1,7 @@
 # Codewars Handbook ☕️🚀
 
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 | [1 kyu](/kata/1-kyu/index.md) | [2 kyu](/kata/2-kyu/index.md) | [3 kyu](/kata/3-kyu/index.md) | [4 kyu](/kata/4-kyu/index.md) | [5 kyu](/kata/5-kyu/index.md) | [6 kyu](/kata/6-kyu/index.md) | [7 kyu](/kata/7-kyu/index.md) | [8 kyu](/kata/8-kyu/index.md) | [beta](/kata/beta/index.md) | [retired](/kata/retired/index.md) |
 |:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:---------------------------:|:---------------------------------:|
-| 0 | 1 | 2 | 26 | 48 | 430 | 583 | 218 | 56 | 79 |
+| 0 | 1 | 2 | 26 | 48 | 430 | 584 | 218 | 56 | 79 |
 
 **Note:** The source code is written in Java 17 and may use language features that are incompatible
 with Java 8, 11.

kata/7-kyu/a-snail-enters-a-bar/README.md

@@ -0,0 +1,38 @@
+# [A snail enters a bar!](https://www.codewars.com/kata/a-snail-enters-a-bar "https://www.codewars.com/kata/66cdc6ab9e7a9f009e0ca8f6")
+
+**Problem Description:**
+
+A snail is crawling along a rubber band that has an initial length of ```x``` units. The snail moves at a constant speed of ```y``` units
+per minute. As the snail crawls from the left end of the rubber band to the right end, the rubber band increases in length from the right
+side every ```minute```, adding ```z``` units to its length.
+
+The question is: Will the snail be able to reach the right end of the rubber band within ```1 year```?
+
+**Parameters:**
+
+- ```x```: Initial length of the rubber band (in units), where ```0.01 ≤ x ≤ 1,000,000```.
+- ```y```: Speed of the snail (in units per minute), where ```0.01 ≤ y ≤ 1,000,000```.
+- ```z```: Amount by which the rubber band increases in length every minute (in units), where ```0.01 ≤ z ≤ 1,000,000```.
+
+**Examples:**
+
+1. **Example 1:**
+
+- Initial length of the rubber band: ```x = 10``` units
+- Speed of the snail: ```y = 2``` units/minute
+- Increase rate of the rubber band: ```z = 1``` unit/minute
+- **Outcome:** ```True``` (The snail will reach the end in ```10``` minutes.)
+
+2. **Example 2:**
+
+- Initial length of the rubber band: ```x = 100``` units
+- Speed of the snail: ```y = 1``` unit/minute
+- Increase rate of the rubber band: ```z = 2``` units/minute
+- **Outcome:** ```False``` (The snail will never reach the end.)
+
+3. **Example 3:**
+
+- Initial length of the rubber band: ```x = 100,000``` units
+- Speed of the snail: ```y = 0.1``` units/minute
+- Increase rate of the rubber band: ```z = 0.05``` units/minute
+- **Outcome:** ```False``` (The snail will not be able to reach the end within one year.)

kata/7-kyu/a-snail-enters-a-bar/main/Snail.java

@@ -0,0 +1,5 @@
+interface Snail {
+  static boolean canSnailReachEnd(double length, double speed, double lengthIncreases) {
+    return speed - lengthIncreases > length / 525600;
+  }
+}

kata/7-kyu/a-snail-enters-a-bar/test/SnailTest.java

@@ -0,0 +1,33 @@
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class SnailTest {
+  @ParameterizedTest
+  @CsvSource(textBlock = """
+      10, 2, 1
+      100, 10, 5
+      50, 5, 1
+      1000, 100, 10
+      1, 0.1, 0.01
+      """)
+  void madeIt(double length, double speed, double lengthIncreases) {
+    assertTrue(Snail.canSnailReachEnd(length, speed, lengthIncreases));
+  }
+
+  @ParameterizedTest
+  @CsvSource(textBlock = """
+      100, 1, 2
+      100000, 0.1, 0.05
+      100, 0.5, 1
+      1000, 1, 2
+      500, 5, 10
+      10000, 0.1, 1
+      65523.45, 656330.6, 832119.73
+      """)
+  void notMakeIt(double length, double speed, double lengthIncreases) {
+    assertFalse(Snail.canSnailReachEnd(length, speed, lengthIncreases));
+  }
+}

kata/7-kyu/index.md

@@ -11,6 +11,7 @@
 - [A Letter's Best Friend](a-letters-best-friend)
 - [A Man and his Earthly Measurement](a-man-and-his-earthly-measurement)
 - [A Rule of Divisibility by 7](a-rule-of-divisibility-by-7)
+- [A snail enters a bar!](a-snail-enters-a-bar)
 - [Acronym Generator](acronym-generator)
 - [AD2070: Help Lorimar troubleshoot his robots- ultrasonic distance analysis](ad2070-help-lorimar-troubleshoot-his-robots-ultrasonic-distance-analysis)
 - [Adding values of arrays in a shifted way](adding-values-of-arrays-in-a-shifted-way)
@@ -86,6 +87,7 @@
 - [Chinese Zodiac](chinese-zodiac)
 - [Circle cipher](circle-cipher)
 - [Circular List](circular-list)
+- [Clean up after your dog](clean-up-after-your-dog)
 - [Closest to Zero](closest-to-zero)
 - [Closing in Sum](closing-in-sum)
 - [Codewars Leaderboard Climber](codewars-leaderboard-climber)
@@ -263,6 +265,7 @@
 - [Inspiring Strings](inspiring-strings)
 - [Integer Primitive Data Types](integer-primitive-data-types)
 - [Interactive Dictionary](interactive-dictionary)
+- [Interlocking Binary Pairs](interlocking-binary-pairs)
 - [IntTunes](inttunes)
 - [Invisible cubes](invisible-cubes)
 - [Is It Negative Zero (-0)?](is-it-negative-zero-0)