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Cash TingHin Lo cashlo

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def result(o):
return eval(o)
def get_all_options(num, tail, target):
if len(num) == 0:
return {}
if len(num) == 1:
return {int(num): [ num ] }
last_dict = get_all_options(num[:-1], num[-1] + tail, target)
curr_dict = {}
class Solution(object):
def frequencySort(self, s):
"""
:type s: str
:rtype: str
"""
freq_d = {}
for c in s:
freq_d[c] = freq_d.get(c, 0) + 1
c_in_order = sorted(freq_d.keys(), key=lambda k: -freq_d[k])
class Solution(object):
def addString(self, prefix, s, k, chars):
print 'AddString({},{},{},{})'.format(prefix, s, k, chars)
if len(prefix) == len(s):
return prefix
for (c,n) in chars.items():
# print prefix[-k+1:]
if c not in prefix[-k+1:] and n > 0:
chars[c] -= 1
class Solution(object):
def lengthLongestPath(self, input):
"""
:type input: str
:rtype: int
"""
inputs = input.split('\n')
file_parts = []
max_file_length = 0
last_pos = -1
# Definition for a binary tree node.
# class TreeNode(object):
# def __init__(self, x):
# self.val = x
# self.left = None
# self.right = None
class Solution(object):
def compareChild(self, root, child):
passRoot, notPassRoot = self.longestPassRootOrNot(child)
class Solution(object):
ds_count = {1: 0, 2: 0, 3: 1, 4:5}
def get_ds_count(self, N):
if N in self.ds_count:
return self.ds_count[N]
self.ds_count[N] = self.get_ds_count(N-1)*2 + (N-2)*(N-1)/2
print 'F({}) = {} + {} '.format(N, self.get_ds_count(N-1)*2, (N-2)*(N-1)/2)
return self.ds_count[N]
def numberOfArithmeticSlices(self, A):
"""
class Solution(object):
def nextPermutation(self, nums):
"""
:type nums: List[int]
:rtype: void Do not return anything, modify nums in-place instead.
"""
if len(nums) == 1: return
for i in range(len(nums)-2, -1, -1):
if nums[i] < nums[i+1]:
m = min((n, -(j+i+1)) for j,n in enumerate(nums[i+1:]) if n > nums[i])
class Solution(object):
def anagramMappings(self, A, B):
"""
:type A: List[int]
:type B: List[int]
:rtype: List[int]
"""
char_set = {c: i for i,c in enumerate(B)}
return [char_set[c] for c in A]
# Definition for a binary tree node.
# class TreeNode(object):
# def __init__(self, x):
# self.val = x
# self.left = None
# self.right = None
class Solution(object):
LCA = None
def lowestCommonAncestor(self, root, p, q):
# Definition for a binary tree node.
# class TreeNode(object):
# def __init__(self, x):
# self.val = x
# self.left = None
# self.right = None
class Solution(object):
def lowestCommonAncestor(self, root, p, q):
"""