[Hacker Rank]: warmup: Birthday Cake Candles solved ✓

Author: Gonzalo Diaz

src/hackerrank/warmup/birthday_cake_candles.rs

@@ -0,0 +1,25 @@
+// @link Problem definition [[docs/hackerrank/warmup/a_very_big_sum.md]]
+
+
+
+#[allow(non_snake_case)]
+pub fn birthdayCakeCandles(candles: &[i32]) -> i32 {
+
+  let mut counter: i32 = 0;
+  let mut maximum: &i32 = &candles[0];
+
+  for (_, element) in candles.iter().enumerate() {
+    if element > maximum
+    {
+      maximum = element;
+      counter = 1;
+    } else {
+      if element == maximum {
+        counter += 1;
+      }
+    }
+  }
+
+  counter
+}
+

src/hackerrank/warmup/mod.rs

@@ -6,3 +6,4 @@ pub mod diagonal_difference;
 pub mod plus_minus;
 pub mod staircase;
 pub mod mini_max_sum;
+pub mod birthday_cake_candles;

tests/data/hackerrank/warmup/birthday_cake_candles.testcases.json

@@ -0,0 +1,20 @@
+[
+  {
+    "input": [
+      3,
+      2,
+      1,
+      3
+    ],
+    "expected": 2
+  },
+  {
+    "input": [
+      1,
+      2,
+      3,
+      3
+    ],
+    "expected": 2
+  }
+]

tests/hackerrank/warmup/birthday_cake_candles.rs

@@ -0,0 +1,31 @@
+use exercises::hackerrank::warmup::birthday_cake_candles::birthdayCakeCandles;
+use once_cell::sync::Lazy;
+use serde::Deserialize;
+
+use crate::common;
+use common::utils::load_json;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[derive(Debug, Deserialize)]
+    struct BirthdayCakeCandlesTestCase {
+        input: Vec<i32>,
+        expected: i32,
+    }
+
+    static TEST_DATA: Lazy<Vec<BirthdayCakeCandlesTestCase>> = Lazy::new(|| {
+        load_json("tests/data/hackerrank/warmup/birthday_cake_candles.testcases.json")
+    });
+
+    #[test]
+    fn test_birthday_cake_candles() {
+        println!("Testing hackerrank::warmup::birthday_cake_candles::birthdayCakeCandles()");
+
+        for test_case in TEST_DATA.iter() {
+            let result = birthdayCakeCandles(test_case.input.as_slice());
+            assert_eq!(result, test_case.expected);
+        }
+    }
+}

tests/hackerrank/warmup/mini_max_sum.rs

@@ -28,7 +28,7 @@ mod tests {
       let result = mini_max_sum(slice);
       miniMaxSum(slice);
 
-      assert_eq!(result, test_case.expected);
+      assert_eq!(result, test_case.expected, "hackerrank::warmup::mini_max_sum::mini_max_sum() => {}", test_case.title);
     }
   }
 

tests/hackerrank/warmup/mod.rs

@@ -6,3 +6,4 @@ pub mod diagonal_difference;
 pub mod plus_minus;
 pub mod staircase;
 pub mod mini_max_sum;
+pub mod birthday_cake_candles;