array cardio v1 kdb

Author: Kyle Bradshaw

04 - Array Cardio Day 1/index-START.html renamed to 04 - Array Cardio Day 1/index.html

@@ -31,31 +31,102 @@
 
     const people = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];
 
+    const streets = ['Boulevards of the Marshals',
+      'Boulevard Auguste-Blanqui',
+      'Boulevard Barbès',
+      'Boulevard Beaumarchais',
+      'Boulevard de l\'Amiral-Bruix',
+      'Boulevard de Strasbourg',
+      'Boulevard des Capucines',
+      'Boulevard de la Chapelle',
+      'Boulevard de Clichy',
+      'Boulevard du Crime',
+      'Boulevard Haussmann',
+      'Boulevard de l\'Hôpital',
+      'Boulevard des Italiens',
+      'Boulevard de la Madeleine',
+      'Boulevard de Magenta',
+      'Boulevard Montmartre',
+      'Boulevard du Montparnasse',
+      'Boulevard Raspail',
+      'Boulevard Richard-Lenoir',
+      'Boulevard de Rochechouart',
+      'Boulevard Saint-Germain',
+      'Boulevard Saint-Michel',
+      'Boulevard de Sébastopol',
+      'Boulevard du Temple',
+      'Boulevard Voltaire',
+      'Boulevard de la Zone'];
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    const i1500s = inventors.filter(inventor => inventor.year >= 1500 && inventor.year < 1600);
+    console.table(i1500s);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors' first and last names
+    const names = inventors.map(inventor => `${inventor.first} ${inventor.last}`);
+    console.log(names);
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    const sorted = inventors.sort((a, b) =>  (a.year > b.year) ? 1 : -1);
+    console.table(sorted);
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
+    const years = inventors.reduce((a, b) => a + (b.passed - b.year),0);
+    console.log(years,'cumulative years');
 
     // 5. Sort the inventors by years lived
+    inventors.forEach(inventor => inventor.age = (inventor.passed - inventor.year));
+    const oldest =  inventors.sort((a,b) => (a.age > b.age) ? -1 : 1);
+
+    console.table(oldest);
 
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
-
+    const de = streets.filter(street => street.match('de'));
+    console.log(de,'de streets', `${de.length} total`);
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    const alpha = people.sort(function(a,b){
+      const [aLast, aFirst] = a.split(', ');
+      const [bLast, bFirst] = a.split(', ');
+      return (aLast > bLast) ? 1 : -1;
+    });
+    console.log(alpha);
+    // sort by first name
+    const first = people.sort(function(a,b){
+      const aFirst = a.split(' ')[1];
+      const bFirst = b.split(' ')[1];
+      return (aFirst < bFirst) ? -1 : 1;
+    });
+    console.log(first);
 
     // 8. Reduce Exercise
     // Sum up the instances of each of these
     const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
 
+    const transport = data.reduce(function(obj, item){
+      if(obj.hasOwnProperty(item)) {
+        obj[item]++
+      } else {
+        obj[item] = 1;
+      }
+      return obj;
+    }, {});
+    console.log(transport);
+
+    const altTransport = data.reduce(function(obj, item){
+      if(!obj[item]) {
+        obj[item] = 0;
+      }
+      obj[item]++;
+      return obj;
+    },{});
+    console.log(altTransport);
+
   </script>
 </body>
 </html>