linked list and other array problems done

NeetCodeRoadmap/Arrays_and_Hashing/35_Search_Insert_Position.py

@@ -0,0 +1,19 @@
+def searchInsert(nums, target):
+    """summary_line
+    
+    Keyword arguments:
+    input: int
+    Return: int
+    """
+    if not nums:
+        return 0
+    ghost = 0
+    
+    for i in range(len(nums)):
+        if nums[i] == target:
+            return i
+        elif nums[i] < target:
+            ghost = i+1
+    return ghost
+# print(searchInsert([1,3,5,6], 5))
+print(searchInsert([1,3,5,6], 2))

NeetCodeRoadmap/Arrays_and_Hashing/66_Plus_One.py

@@ -0,0 +1,11 @@
+def plusOne(digits):
+    zeros = 0
+    if digits[-1] == 9:
+        digits[-1] = 1
+        digits.append(0)
+    else:
+        digits[-1] = digits[-1] + 1
+    return digits
+
+
+print(plusOne([1,2,3]))

NeetCodeRoadmap/LinkedLists/206.Reverse_Linked_List.py

@@ -0,0 +1,29 @@
+def reverseList(head):
+        """
+        :type head: ListNode
+        :rtype: ListNode
+        """
+        prev,current = None,head
+        
+        while current:
+            nxt = current.next 
+            current.next = prev
+            print(prev)
+            prev = current 
+            current = nxt
+        return prev
+
+def reverseListRecursive(head):
+    # Check if head exists
+    if not head:
+        return None
+    
+    newHead = head
+    # Check if head has more to iterate through
+    if head.next:
+        newHead = self.reverseListRecursive(head.next)
+        head.next.next = head
+        head.next = None
+    return newHead
+        
+reverseList([1,2,3,4,5])

NeetCodeRoadmap/Stack/155_Min_Stack.py

@@ -18,7 +18,7 @@ class MinStack(object):
     def top(self):
         if self.stack:
             # print(self.stack)
-            return self.stack[-1][0]
+            return self.stack[-1][0] 
         return 0
 
     def getMin(self):

NeetCodeRoadmap/Stack/682_Baseball_Game.py

@@ -0,0 +1,18 @@
+def calPoints(operations):
+    score = []
+    for i in range(len(operations)):
+        print(score)
+        if operations[i].startswith("-"):
+            score.append(int(operations[i]))
+        if operations[i].isdigit():
+            score.append(int(operations[i]))
+        if operations[i] == "+":
+                score.append(score[-1] + score[-2])
+        if operations[i] == "D":
+            score.append(score[-1] * 2)
+        if operations[i] == "C":
+            score.pop()
+    return sum(score)
+    
+# print(calPoints(["5","2","C","D","+"]))
+print(calPoints(["5","-2","4","C","D","9","+","+"]))

fizzbuzz.py

@@ -17,4 +17,4 @@ def fizzBuzz(n):
             buzz.append(i)
     return buzz
 
-print(fizzBuzz(3))
+print(fizzBuzz(100))