Adding latest

src/stats.rs

@@ -0,0 +1,63 @@
+use std::convert::TryFrom;
+
+#[derive(Debug)]
+pub struct StatsCalculator {
+    data: Vec<i32>,
+}
+
+impl StatsCalculator {
+    pub fn default_data() -> Self {
+        Self::from_vec(vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+    }
+
+    pub fn from_vec(initial_data: Vec<i32>) -> Self {
+        return StatsCalculator { data: initial_data };
+    }
+
+    // pub fn initialise(&mut self) -> () {
+    //     self.total = self.data.iter().sum();
+    //     let length = i32::try_from(self.data.len());
+    //     // self.length = match length {
+    //     //     Ok(i) => i,
+    //     //     _ => 0,
+    //     // };
+    //     if let Ok(i) = length {
+    //         self.length = i;
+    //     } else {
+    //         self.length = 0;
+    //     }
+    // }
+
+    fn get_length(&self) -> i32 {
+        let length = i32::try_from(self.data.len());
+
+        if let Ok(i) = length {
+            return i;
+        } else {
+            return 0;
+        }
+    }
+
+    fn get_total(&self) -> i32 {
+        return self.data.iter().sum();
+    }
+
+    pub fn get_mean(&self) -> f32 {
+        let total = self.get_total();
+        let length = self.get_length();
+        return total as f32 / length as f32;
+    }
+
+    pub fn get_median(&mut self) -> f32 {
+        let length = self.get_length();
+        let mid = length as usize / 2;
+
+        self.data.sort();
+
+        if length % 2 != 0 {
+            return self.data[mid] as f32;
+        } else {
+            return (self.data[mid - 1] as f32 + self.data[mid] as f32) / 2.0;
+        }
+    }
+}