Sorting

06week/Sorting.js

@@ -0,0 +1,111 @@
+const strNums = ["1","4","1","5","9","2","6","5","3","5","8","9","7","9","3","2","3","8","4","6","2","6","4","3","3","8","3","2","7","9","5","0","2","8","8","4","1","9","7","1","6","9","3","9","9","3","7","5","1","0","5","8","2","0","9","7","4","9","4","4","5","9","2","3","0","7","8","1","6","4","0","6","2","8","6","2","0","8","9","9","8","6","2","8","0","3","4","8","2","5","3","4","2","1","1","7","0","6","7","9","8","2","1","4","8","0","8","6","5","1","3","2","8","2","3","0","6","6","4","7","0","9","3","8","4","4","6","0","9","5","5","0","5","8","2","2","3","1","7","2","5","3","5","9","4","0","8","1","2","8","4","8","1","1","1","7","4","5","0","2","8","4","1","0","2","7","0","1","9","3","8","5","2","1","1","0","5","5","5","9","6","4","4","6","2","2","9","4","8","9","5","4","9","3","0","3","8","1","9","6","4","4","2","8","8","1","0","9","7","5","6","6","5","9","3","3","4","4","6","1","2","8","4","7","5","6","4","8","2","3","3","7","8","6","7","8","3","1","6","5","2","7","1","2","0","1","9","0","9","1","4","5","6","4","8","5","6","6","9","2","3","4","6","0","3","4","8","6","1","0","4","5","4","3","2","6","6","4","8","2","1","3","3","9","3","6","0","7","2","6","0","2","4","9","1","4","1","2","7","3","7","2","4","5","8","7","0","0","6","6","0","6","3","1","5","5","8","8","1","7","4","8","8","1","5","2","0","9","2","0","9","6","2","8","2","9","2","5","4","0","9","1","7","1","5","3","6","4","3","6","7","8","9","2","5","9","0","3","6","0","0","1","1","3","3","0","5","3","0","5","4","8","8","2","0","4","6","6","5","2","1","3","8","4","1","4","6","9","5","1","9","4","1","5","1","1","6","0","9","4","3","3","0","5","7","2","7","0","3","6","5","7","5","9","5","9","1","9","5","3","0","9","2","1","8","6","1","1","7","3","8","1","9","3","2","6","1","1","7","9","3","1","0","5","1","1","8","5","4","8","0","7","4","4","6","2","3","7","9","9","6","2","7","4","9","5","6","7","3","5","1","8","8","5","7","5","2","7","2","4","8","9","1","2","2","7","9","3","8","1","8","3","0","1","1","9","4","9","1","2","9","8","3","3","6","7","3","3","6","2","4","4","0","6","5","6","6","4","3","0","8","6","0","2","1","3","9","4","9","4","6","3","9","5","2","2","4","7","3","7","1","9","0","7","0","2","1","7","9","8","6","0","9","4","3","7","0","2","7","7","0","5","3","9","2","1","7","1","7","6","2","9","3","1","7","6","7","5","2","3","8","4","6","7","4","8","1","8","4","6","7","6","6","9","4","0","5","1","3","2","0","0","0","5","6","8","1","2","7","1","4","5","2","6","3","5","6","0","8","2","7","7","8","5","7","7","1","3","4","2","7","5","7","7","8","9","6","0","9","1","7","3","6","3","7","1","7","8","7","2","1","4","6","8","4","4","0","9","0","1","2","2","4","9","5","3","4","3","0","1","4","6","5","4","9","5","8","5","3","7","1","0","5","0","7","9","2","2","7","9","6","8","9","2","5","8","9","2","3","5","4","2","0","1","9","9","5","6","1","1","2","1","2","9","0","2","1","9","6","0","8","6","4","0","3","4","4","1","8","1","5","9","8","1","3","6","2","9","7","7","4","7","7","1","3","0","9","9","6","0","5","1","8","7","0","7","2","1","1","3","4","9","9","9","9","9","9","8","3","7","2","9","7","8","0","4","9","9","5","1","0","5","9","7","3","1","7","3","2","8","1","6","0","9","6","3","1","8","5","9","5","0","2","4","4","5","9","4","5","5","3","4","6","9","0","8","3","0","2","6","4","2","5","2","2","3","0","8","2","5","3","3","4","4","6","8","5","0","3","5","2","6","1","9","3","1","1","8","8","1","7","1","0","1","0","0","0","3","1","3","7","8","3","8","7","5","2","8","8","6","5","8","7","5","3","3","2","0","8","3","8","1","4","2","0","6","1","7","1","7","7","6","6","9","1","4","7","3","0","3","5","9","8","2","5","3","4","9","0","4","2","8","7","5","5","4","6","8","7","3","1","1","5","9","5","6","2","8","6","3","8","8","2","3","5","3","7","8","7","5","9","3","7","5","1","9","5","7","7","8","1","8","5","7","7","8","0","5","3","2","1","7","1","2","2","6","8","0","6","6","1","3","0","0","1","9","2","7","8","7","6","6","1","1","1","9","5","9","0","9","2","1","6","4","2","0","1","9","8","9"];
+
+// Given 1000 digits of PI as strings, return an array of the digits as numbers
+const stringsToNumbs = (numbers) => {
+    return numbers.map(Number);     
+}
+
+console.log("RETURN ARRAY AS NUMBERS: ", stringsToNumbs(strNums));
+
+// With the same numbers, find the sum of the even values
+const b = [];
+
+for (var i = 0; i < strNums.length; ++i) { 
+    if ((strNums[i] % 2) === 0) {
+        b.push(strNums[i]);
+    }
+}
+
+const sumEvens = b.push(strNums[i]);
+
+
+console.log("SUM OF EVEN VALUES: ", sumEvens);
+
+// Find the index of the first value when added to it's index = 512 (#ATX!!)
+//const atxIdx;
+
+//console.log(`index: ${atxIdx}, value: ${nums[atxIdx]}`);
+
+ const weather = [
+  { id: 5743823523151872,
+    weather_state_name: "Light Cloud",
+    weather_state_abbr: "lc",
+    wind_direction_compass: "NNE",
+    created: "2018-07-11T20:53:03.251710Z",
+    applicable_date: "2018-07-11",
+    min_temp: 14.43,
+    max_temp: 23.36,
+    the_temp: 22.785,
+    wind_speed: 5.682503989556987,
+    wind_direction: 21.6264939172659,
+    air_pressure: 1024.45,
+    humidity: 58,
+    visibility: 8.683041040324504,
+    predictability: 70
+  },
+  { id: 6188149969518592,
+    weather_state_name: "Heavy Cloud",
+    weather_state_abbr: "hc",
+    wind_direction_compass: "NE",
+    created: "2018-07-11T20:53:03.268190Z",
+    applicable_date: "2018-07-12",
+    min_temp: 14.81,
+    max_temp: 25.52,
+    the_temp: 24.61,
+    wind_speed: 3.2461141472739206,
+    wind_direction: 42.72552812997726,
+    air_pressure: 1024.605,
+    humidity: 54,
+    visibility: 10.633835898353615,
+    predictability: 71
+  },
+  { id: 5742049676492800,
+    weather_state_name: "Showers",
+    weather_state_abbr: "s",
+    wind_direction_compass: "E",
+    created: "2018-07-11T20:53:03.947390Z",
+    applicable_date: "2018-07-13",
+    min_temp: 15.5525,
+    max_temp: 25.3475,
+    the_temp: 24.175,
+    wind_speed: 3.6572546846814604,
+    wind_direction: 90.32910675612557,
+    air_pressure: 1025.385,
+    humidity: 57,
+    visibility: 10.181166984808717,
+    predictability: 73  
+  },
+  { id: 6696130918219776,
+    weather_state_name: "Heavy Cloud",
+    weather_state_abbr: "hc",
+    wind_direction_compass: "SSW",
+    created: "2018-07-11T20:53:04.068570Z",
+    applicable_date: "2018-07-14",
+    min_temp: 15.915,
+    max_temp: 27.0925,
+    the_temp: 26.585,
+    wind_speed: 3.649847972759087,
+    wind_direction: 200.04283406736377,
+    air_pressure: 1024.4450000000002,
+    humidity: 52,
+    visibility: 11.14056410562316,
+    predictability: 71
+  },
+];
+
+//using a higher order function, create an array of the unique 'weather_state_name' values of the weather array. Your function should return the following array ['Light Cloud', 'Heavy Cloud', 'Showers']
+const weatherStates = weather.map(function(weatherstate) {
+  return weatherstate.weather_state_name;
+})
+
+console.log("WEATHER STATE NAME ARRAY: ", weatherStates)
+
+//find the id of the object in weather that has a min_temp of 15.915
+
+const idealTemp = weather.map(function(idealtemp) {
+  if(idealtemp.min_temp === 15.915) {
+    return idealtemp.id; 
+  }
+})
+
+console.log("OBJECT ID MIN_TEMP OF 15.915: ",idealTemp)

06week/higherOrder.js

@@ -2,38 +2,49 @@
 
 const assert = require('assert');
 
-function forEach(arr, callback) {
-  // Your code here
-}
 
 function map(arr, callback) {
-  // Your code here
-}
+
+  let newArray = [];
 
-function filter(arr, callback) {
-  // Your code here
-}
+  for(let i = 0; i < arr.length; i++){
+    let elements = callback(arr[i]);
+    newArray.push(elements);
+  }
+
+  return newArray;
 
-function some(arr, callback) {
-  // Your code here
 }
 
-function every(arr, callback) {
-  // Your code here
+function reduce(array, callback, accumulator) {
+  accumulator = accumulator || 0;
+
+  for(let index = 0; index < array.length; index++) {
+    if(typeof array[index] == 'number') {
+      accumulator = accumulator + array[index];
+    } else if(typeof array[index] == 'object') {
+        for(let i in array[index]) {
+          accumulator = accumulator + array[index];
+        }
+    }
+  }
+  return accumulator;
 }
 
-if (typeof describe === 'function') {
+function filter(arr, callback) {
 
-  describe('#forEach()', () => {
-    it('should call the callback the array.length number of times', () => {
-      let count = 0;
-      forEach([1, 2, 3], () => {
-        count++;
-      });
-      assert.equal(count, 3);
-    });
-  });
+  let newArray = [];
+
+  for(let i = 0; i < arr.length; i++) {
+    if(callback(arr[i])) {
+      newArray.push(arr[i]);
+    }
+  }
+  return newArray;
+}
 
+
+if (typeof describe === 'function') {
   describe('#map()', () => {
     const arr = [1, 2, 3];
     const mapped = map(arr, (num) => {
@@ -47,57 +58,23 @@ if (typeof describe === 'function') {
     })
   });
 
-  describe('#filter()', () => {
-    it('should return an array of items that pass the predicate test', () => {
-      const filtered = filter([1, 2, 3], (num) => {
-        return num % 2 === 0;
-      });
-      assert.deepEqual(filtered, [2]);
-    });
-  });
-
-  describe('#some()', () => {
-    let count = 0;
-    const somed = some([1, 2, 3, 4], (num) => {
-      count++;
-      return num % 2 === 0;
-    });
-    it('should return true if at least one item passes the predicate test', () => {
-      assert.equal(somed, true);
-    });
-    it('should stop at the first item that passes the predicate test', () => {
-      assert.equal(count, 2);
-    });
-    it('should return false if no items pass the predicate test', () => {
-      const somed = some([1, 3, 5], (num) => {
-        return num % 2 === 0;
+  describe('#reduce()', () => {
+    it('should return array elements added together', () => {
+      const reduced = reduce([1, 2, 3], (acc, num) => {
+        return acc + num;
       });
-      assert.equal(somed, false);
+      assert.deepEqual(reduced, 6);
     });
   });
 
-  describe('#every()', () => {
-    it('should return true if at all passes the predicate test', () => {
-      const everied = every([2, 4, 6], (num) => {
+  describe('#filter()', () => {
+    it('should return an array of items that pass the predicate test', () => {
+      const filtered = filter([1, 2, 3], (num) => {
         return num % 2 === 0;
       });
-      assert.equal(everied, true);
-    });
-    let count = 0;
-    const everied = every([2, 3, 4, 5], (num) => {
-      count++;
-      return num % 2 === 0;
-    });
-    it('should return false if any item fails the predicate test', () => {
-      assert.equal(everied, false);
-    });
-    it('should stop at the first item that fails the predicate test', () => {
-      assert.equal(count, 2);
+      assert.deepEqual(filtered, [2]);
     });
   });
-
 } else {
-
   console.log('Only run the tests on this one!')
-
 }