added chapter 11

loiane · loiane · commit 7b5bc4770d1c · 2014-08-29T13:24:06.000-03:00
diff --git a/chapter11/02-MinCoinChangeDP.html b/chapter11/02-MinCoinChangeDP.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title></title>
+</head>
+<body>
+<script type="text/javascript" src="02-MinCoinChangeDP.js"></script>
+</body>
+</html>
diff --git a/chapter11/02-MinCoinChangeDP.js b/chapter11/02-MinCoinChangeDP.js
@@ -0,0 +1,38 @@
+function MinCoinChange(coins){
+
+    var coins = coins;
+
+    var cache = {};
+
+    this.makeChange = function(amount) {
+        var me = this;
+        if (!amount) {
+            return [];
+        }
+        if (cache[amount]) {
+            return cache[amount];
+        }
+        var min = [], newMin, newAmount;
+        for (var i=0; i<coins.length; i++){
+            var coin = coins[i];
+            newAmount = amount - coin;
+            if (newAmount >= 0){
+                newMin = me.makeChange(newAmount);
+            }
+            if (
+                newAmount >= 0 &&
+                (newMin.length < min.length-1 || !min.length) &&
+                (newMin.length || !newAmount)
+                ){
+                min = [coin].concat(newMin);
+                console.log('new Min ' + min + ' for ' + amount);
+            }
+        }
+        return (cache[amount] = min);
+    };
+}
+
+
+var minCoinChange = new MinCoinChange([1, 5, 10, 25]);
+
+console.log(minCoinChange.makeChange(37));
diff --git a/chapter11/BigONotation.html b/chapter11/BigONotation.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title></title>
+</head>
+<body>
+<script type="text/javascript" src="BigONotation.js"></script>
+</body>
+</html>
diff --git a/chapter11/BigONotation.js b/chapter11/BigONotation.js
@@ -0,0 +1,65 @@
+//*************** o(1)
+function increment(num){
+    console.log('cost for increment with input ' + num + ' is 1');
+    return  ++num;
+}
+
+increment(1);
+increment(2);
+
+//*************** o(n)
+
+function createNonSortedArray(size){
+    var array = []
+
+    for (var i = size; i> 0; i--){
+        array[i] = i;
+    }
+
+    return array;
+}
+
+function sequentialSearch(array, item){
+    var cost = 0;
+    for (var i=0; i<array.length; i++){
+        cost++;
+        if (item === array[i]){ //{1}
+            return i;
+        }
+    }
+    console.log('cost for sequentialSearch with input size ' + array.length + ' is ' + cost);
+    return -1;
+}
+
+var array = createNonSortedArray(99);
+sequentialSearch(array, -1);
+
+//*************** o(nˆ2)
+
+function swap(array, index1, index2){
+    var aux = array[index1];
+    array[index1] = array[index2];
+    array[index2] = aux;
+}
+
+function bubbleSort(array){
+    var length = array.length;
+    var cost = 0;
+    for (var i=0; i<length; i++){ //{1}
+        cost++;
+        for (var j=0; j<length-1; j++ ){ //{2}
+            cost++;
+            if (array[j] > array[j+1]){
+                swap(array, j, j+1);
+            }
+        }
+    }
+    console.log('cost for bubbleSort with input size ' + length + ' is ' + cost);
+}
+
+var array1 = createNonSortedArray(99);
+var array2 = createNonSortedArray(999);
+var array3 = createNonSortedArray(9999);
+bubbleSort(array1);
+bubbleSort(array2);
+bubbleSort(array3);
diff --git a/chapter11/MinCoinChangeGreedy.js b/chapter11/MinCoinChangeGreedy.js
@@ -0,0 +1,11 @@
+var makeChange = function(amount) {
+    var change = [],
+        total = 0;
+    [25, 10, 5, 1].forEach(function(coin) {
+        while (total + coin <= amount) {
+            change.push(coin);
+            total += coin;
+        }
+    });
+    return change;
+};
