[Sync Iteration] rust/rna-transcription/1

solutions/rust/rna-transcription/1/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rna_transcription"
+version = "0.1.0"
+edition = "2024"
+
+# Not all libraries from crates.io are available in Exercism's test runner.
+# The full list of available libraries is here:
+# https://github.com/exercism/rust-test-runner/blob/main/local-registry/Cargo.toml
+[dependencies]

solutions/rust/rna-transcription/1/src/lib.rs

@@ -0,0 +1,50 @@
+use std::collections::HashMap;
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct Dna {
+    coding_strand:String
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct Rna {
+    coding_strand:String
+}
+
+impl Dna {
+    pub fn new(dna: &str) -> Result<Dna, usize> {
+        let nucleotides = ['A', 'T', 'C', 'G'];
+        let mut seq = String::new();
+        for (index, ch) in dna.to_uppercase().chars().enumerate() {
+            if nucleotides.contains(&ch) {
+                seq.push(ch);
+            }else {
+                return Err(index)
+            }
+        }
+        Ok(Self { coding_strand: seq  })
+    }
+
+    pub fn into_rna(self) -> Rna {
+        let pair = HashMap::from([('G','C'),('C','G'), ('T','A'), ('A','U')]);
+        let mut trans_seq = String::new();
+        for ch in self.coding_strand.chars() {
+            trans_seq.push(pair.get(&ch).unwrap().to_owned())
+        }
+        Rna { coding_strand: trans_seq }
+    }
+}
+
+impl Rna {
+    pub fn new(rna: &str) -> Result<Rna, usize> {
+         let nucleotides = ['A', 'C', 'G', 'U'];
+        let mut seq = String::new();
+        for (index, ch) in rna.to_uppercase().chars().enumerate() {
+            if nucleotides.contains(&ch) {
+                seq.push(ch);
+            }else {
+                return Err(index)
+            }
+        }
+        Ok(Self { coding_strand: seq  })
+    }
+}