summaryrefslogtreecommitdiff
path: root/solutions
diff options
context:
space:
mode:
Diffstat (limited to 'solutions')
-rw-r--r--solutions/05_vecs/vecs2.rs51
1 files changed, 50 insertions, 1 deletions
diff --git a/solutions/05_vecs/vecs2.rs b/solutions/05_vecs/vecs2.rs
index 4e18198..32c1c0f 100644
--- a/solutions/05_vecs/vecs2.rs
+++ b/solutions/05_vecs/vecs2.rs
@@ -1 +1,50 @@
-// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
+fn vec_loop(input: &[i32]) -> Vec<i32> {
+ let mut output = Vec::new();
+
+ for element in input {
+ output.push(2 * element);
+ }
+
+ output
+}
+
+fn vec_map_example(input: &[i32]) -> Vec<i32> {
+ // An example of collecting a vector after mapping.
+ // We map each element of the `input` slice to its value plus 1.
+ // If the input is `[1, 2, 3]`, the output is `[2, 3, 4]`.
+ input.iter().map(|element| element + 1).collect()
+}
+
+fn vec_map(input: &[i32]) -> Vec<i32> {
+ input.iter().map(|element| 2 * element).collect()
+}
+
+fn main() {
+ // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn test_vec_loop() {
+ let input = [2, 4, 6, 8, 10];
+ let ans = vec_loop(&input);
+ assert_eq!(ans, [4, 8, 12, 16, 20]);
+ }
+
+ #[test]
+ fn test_vec_map_example() {
+ let input = [1, 2, 3];
+ let ans = vec_map_example(&input);
+ assert_eq!(ans, [2, 3, 4]);
+ }
+
+ #[test]
+ fn test_vec_map() {
+ let input = [2, 4, 6, 8, 10];
+ let ans = vec_map(&input);
+ assert_eq!(ans, [4, 8, 12, 16, 20]);
+ }
+}