PRTM

rust/src/main.rs

@@ -6,6 +6,7 @@ use utils::run_solution;
 #[derive(clap::ValueEnum, Clone, Debug)]
 enum Problem {
     REVP,
+    PRTM,
 }
 
 #[derive(Parser, Debug)]

rust/src/solutions/mod.rs

@@ -1,2 +1,4 @@
+mod prtm;
 mod revp;
+pub use prtm::prtm;
 pub use revp::revp;

rust/src/solutions/prtm.rs

@@ -0,0 +1,32 @@
+use crate::utils::AMINO_ACID_MASS_TABLE;
+use std::collections::HashMap;
+
+pub fn prtm(file_content: String) -> String {
+    let mut out_mass = 0.0;
+    let mass_map: HashMap<char, f64> = AMINO_ACID_MASS_TABLE.iter().cloned().collect();
+    for aa in file_content.trim().chars() {
+        out_mass += mass_map
+            .get(&aa)
+            .expect("The given letter was not in the map");
+    }
+    // rounds to 3 decimal places
+    return ((out_mass * 1000.0).round() / 1000.0).to_string();
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_prtm() {
+        let input_content = "SKADYEK".to_string();
+        let expected = "821.392";
+        assert_eq!(prtm(input_content), expected);
+    }
+    #[test]
+    fn test_prtm_float64() {
+        let input_content = "DVMPGSWEYQNMGDENESNPGQTQHYCIDWAGWRDTHPNCPQMPEFSISGPPYIAKRPSCKISPMDKLTATYWEAHAFNARVLKSNCMWQCPMLMNHMQNAQCCGFGRWECAWMTAINQGSFDYARFGFYTATINASFILCTDWIMVVWSRPSARVSKRWHYDPQSGAYSRENCYVHNYLPHDQNRCIYGNFQTFHGTFCVRGPSSVNTADWWTQRCYMPHQQMLVQPSRMWYTGARPHPRWTHRHNHIRFWWGCHKVCYKWIRGNDIHCHKFTYVVNGSGKATGCEALCNEWQTWGHRFQLESGYRQMCANRCSNRKEHYICDVCGRYFVNYVSFRLLLMKPDDMYETGDIFEGLSIYGTNHKGIVPLWPIMHRMAIKTKTAACEFQGTEKQPVTKVDSNRWCMNGWEQPITTMIQVGLSMGYVRWVCMAGPTSQPQAGGNFPEHPVMQCQKVRQECVLCPMSGRMEPWRTDFGDHNGMDIKVMNNFQPMCISTGTIMLNDPCMSIVDKSAEYCYTWFFVDFWKWYAVPNIIDREWGCCCNNSCEKDYRSRAKADTHHVCSVYFQTVNSRFRPARENYKHTGFRMLQRLPIHNTAAANDMVYLVHMMIRHFFPLLHKPCDETGPHNGKIKWFWLCGDINWARSSDSYIRWLNNYMWFMSERMVNWRFIEKDNQVFDAYRASAWFVGWVLWRQDGFACGHCQLECRHTFAMDEMSHGGIYWNRPVQLVEARGPHCMRLHHLQQGFILIWDFMNDLGQRKDFGCSTHGYGFNYNNFQHIDAWTMYTFTEASNFCTITAHDDADLLPHHCRPRGKCGVTNCKQNALIIATPLRYILHRVTVTCIGLQVQCRCTDGIMDENFALCMVIIHLLNYYHTNAFRRLKTHNENSSKPDNWCNNRGGHMCMKTTRVMETKWLEATLW".to_string();
+        let expected = "107861.254";
+        assert_eq!(prtm(input_content), expected);
+    }
+}

rust/src/utils.rs

@@ -1,6 +1,29 @@
 use crate::{solutions, Problem};
 use std::{fs, io};
 
+pub const AMINO_ACID_MASS_TABLE: [(char, f64); 20] = [
+    ('A', 71.03711),
+    ('C', 103.00919),
+    ('D', 115.02694),
+    ('E', 129.04259),
+    ('F', 147.06841),
+    ('G', 57.02146),
+    ('H', 137.05891),
+    ('I', 113.08406),
+    ('K', 128.09496),
+    ('L', 113.08406),
+    ('M', 131.04049),
+    ('N', 114.04293),
+    ('P', 97.05276),
+    ('Q', 128.05858),
+    ('R', 156.10111),
+    ('S', 87.03203),
+    ('T', 101.04768),
+    ('V', 99.06841),
+    ('W', 186.07931),
+    ('Y', 163.06333),
+];
+
 pub struct FastaRecord {
     pub id: String,
     pub sequence: String,
@@ -11,6 +34,7 @@ pub fn run_solution(problem: Problem, in_file: &String, out_file: &String) {
     let solution: io::Result<String> = match fs::read_to_string(in_file) {
         Ok(content) => match problem {
             Problem::REVP => Ok(solutions::revp(content)),
+            Problem::PRTM => Ok(solutions::prtm(content)),
         },
         Err(e) => Err(e),
     };