Added position average solution

README.md

@@ -45,6 +45,7 @@ other languages.
 - Spinning Words (https://www.codewars.com/kata/5264d2b162488dc400000001)
 - Camel Case (https://www.codewars.com/kata/517abf86da9663f1d2000003)
 - Count Characters (https://www.codewars.com/kata/52efefcbcdf57161d4000091)
+- Position Average (https://www.codewars.com/kata/59f4a0acbee84576800000af)
 
 #### Kata 7
 

src/codewars/mod.rs

@@ -45,3 +45,4 @@ mod people_on_the_bus;
 mod summation;
 mod not_secure;
 mod count_characters;
+mod position_average;

src/codewars/position_average.rs

@@ -0,0 +1,27 @@
+fn position_average(s: &str) -> f64 {
+    let values = s.split(", ").collect::<Vec<&str>>();
+    let mut equal_count = 0;
+    let mut count = 0;
+    for (index, value) in values[..values.len() - 1].iter().enumerate() {
+        for v in values[index + 1..].iter() {
+            equal_count += value.chars().zip(v.chars()).filter(|(a, b)| a == b).count();
+            count += value.len()
+        }
+    }
+
+    (equal_count as f64 / count as f64) * 100.0
+}
+
+#[cfg(test)]
+mod tests {
+    use test_case::test_case;
+
+    use crate::codewars::position_average::position_average;
+
+    // TODO: Additional test cases would be great but cant be bothered to add the float_eq macro atm.
+    #[test_case("123, 123", 100.0)]
+    fn test_position_average(input: &str, expected: f64) {
+        let average = position_average(input);
+        assert_eq!(average, expected)
+    }
+}