Contents

module.exports = function School() {

  var db = {};

  function add(student, grade) {
    if(db[grade]) {
      db[grade].push(student);
    } else {
      db[grade] = [student];
    }
  }

  function grade(level) {
    return db[level] ? clone(db[level]).sort() : [];
  }

  function roster() {
    return sortedGrades().reduce(function(sorted, grade) {
      sorted[grade] = clone(db[grade]).sort();
      return sorted;
    }, {});
  }

  function sortedGrades() {
    return Object.keys(db).sort();
  }

  return {
    roster: roster,
    add: add,
    grade: grade
  };

};

function clone(array) {
  return array.slice();
}

Version data entries

255 entries across 255 versions & 1 rubygems

Version	Path
trackler-2.2.1.37	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.36	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.35	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.34	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.33	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.32	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.31	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.30	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.29	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.28	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.27	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.26	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.25	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.24	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.23	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.22	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.21	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.20	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.19	tracks/javascript/exercises/grade-school/example.js
trackler-2.2.1.18	tracks/javascript/exercises/grade-school/example.js