Adding some files

Author: camilosalazar98

Python/chapter01/1.3 - URLify/camilo_solution_1.3.py

@@ -5,7 +5,21 @@
  (Note: If implementing in Java,please use a character array so that you can
  perform this operation in place.)
 EXAMPLE
-Input: "Mr John Smith ", 13 Output: "Mr%20John%20Smith"
+Input: "Mr John Smith   ", 13 Output: "Mr%20John%20Smith"
 """
 
 def urlify(str):
+    len_ = len(str) #gets the lenght of str
+    new_str = ""#build a new string
+    for i in range(len_-1):
+        if str[i] == " " and str[i+1]==" ":#if two space aheah are space then break
+            break
+        if str[i] == " ": #if we find a space just add %20
+            new_str+= "%20"
+
+        else: #just add the chars
+            new_str+= str[i]
+
+    return new_str
+
+print(urlify("MY house is on fire "))

Python/chapter02/2.7 - Intersection/camilo_soultion_2.7.py

@@ -161,18 +161,19 @@ def intersection(listA,ListB):
 
 # 1->2->3->4->5->6->7
 # 3->5->6->7
-llist_1 = linklist()
-llist_2 = linklist()
-llist_1.push(1)
-llist_1.push(3)
-llist_1.push(5)
-llist_1.push(7)
-llist_1.push(9)
-llist_1.push(11)
-
-llist_2.push(2)
-llist_2.push(4)
-llist_2.push(9)
-llist_2.push(11)
+class Test(TestCase):
+    def setUp():
+        llist_1 = linklist()
+        llist_2 = linklist()
+        llist_1.push(1)
+        llist_1.push(3)
+        llist_1.push(5)
+        llist_1.push(7)
+        llist_1.push(9)
+        llist_1.push(11)
+        llist_2.push(2)
+        llist_2.push(4)
+        llist_2.push(9)
+        llist_2.push(11)
 
 print(intersection(llist_1,llist_2))

Python/chapter03/3.1 - Three in One/camilo_solution_3.1.py

@@ -0,0 +1,65 @@
+class stack:
+    def __init__(self):
+        self.arr = []
+
+    def push(self,item):
+        """
+        Add an item to the top of the stack.
+        """
+        self.arr.insert(0,item)
+
+    def pop_():
+        """
+        Remove the top item from the stack.
+        """
+        arr = self.arr
+        len_ = len(arr)
+        return self.arr.pop(arr)
+
+
+    def peek(self):
+        """
+        Return the top of the stack.
+        """
+        return self.arr[0]
+
+    def isEmpty():
+        """
+        Return true if and only if the stack is empty.
+        """
+        if self.arr == None:
+            return True
+        return False
+
+
+
+class queue:
+    def __init__(self):
+        self.arr = []
+
+    def add(self,item):
+        """
+        Add an item to the end of the list.
+        """
+        self.arr.append(item)
+
+
+    def remove(self):
+        """
+        Remove the first item in the list.
+        """
+        return self.arr.pop(0)
+
+    def peek(self):
+        """
+        Return the top of the queue.
+        """
+        return self.arr[0]
+
+    def isEmpty():
+        """
+        Return true if and only if the queue is empty.
+        """
+        if self.arr == None:
+            return True
+        return False