from utils.utils import container, random_str
from collections import defaultdict
import random
def func(s):
collect = [
'M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I'
]
num = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]
ptr = 0
ans = 0
while len(s):
pattern = collect[ptr]
if s[:len(pattern)] == pattern:
ans += num[ptr]
s = s[len(pattern):]
else:
ptr += 1
return ans
container(func, 'LVIII')
return True
return False
if epoch(target):
return target
m = 0
while True:
if epoch(target + m):
return target + m
if epoch(target - m):
return target - m
m += 1
def ref(nums, target):
import bisect
nums, r, end = sorted(nums), float('inf'), len(nums) - 1
for c in range(len(nums) - 2):
i, j = max(
c + 1,
bisect.bisect_left(nums, target - nums[end] - nums[c], c + 1, end)
- 1), end
while r != target and i < j:
s = nums[c] + nums[i] + nums[j]
r, i, j = min(r, s, key=lambda x: abs(x - target)), i + (
s < target), j - (s > target)
return r
container(func, [-1, 2, 1, -4], 1)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(n):
ans = [('', n, 0)]
for i in range(2 * n):
collect = []
for k in ans:
if k[1] > 0:
collect.append((k[0] + '(', k[1] - 1, k[2] + 1))
if k[2] > 0:
collect.append((k[0] + ')', k[1], k[2] - 1))
ans = collect
ans = [k[0] for k in ans]
return ans
container(func, 5)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(s):
t = ['']
close = {')': '(', '}': '{', ']': '['}
for item in s:
if item in close and t[-1] == close[item]:
t.pop()
elif item in close:
return False
else:
t.append(item)
if len(t) == 1:
return True
return False
def ref(s):
while '{}' in s or '()' in s or '[]' in s:
s = s.replace('{}', '')
s = s.replace('[]', '')
s = s.replace('()', '')
return s == ''
container(func, '{[]}')
97, 22, 14, 59, 15, 96, 47, 1, 27, 65, 38, 69, 24, 58, 59, 45, 93, 37, 83,
30, 55, 30, 37, 82, 3, 54, 8, 89, 67, 47, 74, 16, 69, 40, 27, 85, 36, 75,
38, 64, 92, 29, 85, 68, 87, 96, 13, 32, 86, 96, 63, 41, 79, 52, 24, 82, 58,
84, 71, 25, 32, 97, 41, 1, 89, 68, 38, 26, 95, 77, 90, 87, 6, 27, 56, 45,
23, 69, 77, 9, 18, 92, 51, 97, 96, 27, 31, 54, 11, 54, 79, 95, 3, 72, 49,
92, 93, 87, 70, 88, 16, 12, 28, 74, 39, 84, 19, 63, 5, 49, 72, 75, 93, 75,
24, 90, 2, 55, 44, 66, 61, 76, 13, 64, 48, 62, 9, 93, 2, 79, 82, 70, 92,
10, 45, 83, 46, 64, 46, 3, 65, 71, 79, 59, 98, 3, 49, 53, 59, 45, 19, 72,
21, 84, 89, 22, 99, 98, 15, 1, 29, 49, 23, 73, 11, 68, 57, 57, 85, 55, 61,
50, 78, 92, 9, 77, 95, 10, 30, 6, 56, 1, 79, 77, 85, 68, 99, 84, 18, 67,
37, 47, 16, 61, 21, 28, 81, 30, 85, 66, 85, 98, 17, 64, 42, 26, 93, 38, 89,
23, 96, 45, 24, 75, 74, 61, 95, 74, 46, 13, 93, 35, 13, 9, 96, 86, 37, 78,
16, 75, 96, 53, 25, 13, 69, 68
]
container(func, sample)
# def func(height):
# left = [0]
# w = 0
# for idx in range(1, len(height)):
# h = height[idx]
# tmp = 0
# for i in range(len(left) - 1, -1, -1):
# li = left[i]
# this = (idx - li) * min(h, height[li])
# if this < tmp:
# left.pop(i)
# else:
# tmp = this
# w = max(w, this)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(s):
# cache记录每个字符在s中位置，center记录每个中心扩散出的回文串长度
cache = defaultdict(list)
center = defaultdict(int)
for i, item in enumerate(s):
for last in cache[item]:
c = (last + i) / 2
hl = i - last + 1
if hl - center[c] <= 3:
center[c] = hl
cache[item].append(i)
max_c = 0
keys = list(center.keys())
for c in keys:
if center[c] > center[max_c]:
max_c = c
if center[max_c] == 0:
center[max_c] = 1
return s[int(max_c - center[max_c] / 2 + 0.5):int(max_c +
center[max_c] / 2 + 0.5)]
container(func, 'abc')
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(nums, target):
left, right = 0, len(nums) - 1
while left <= right:
mid = (left + right) // 2
if nums[mid] == target:
return mid
elif nums[mid] < nums[right]:
if nums[mid] < target <= nums[right]:
left = mid + 1
else:
right = mid - 1
else:
if nums[left] <= target < nums[mid]:
right = mid - 1
else:
left = mid + 1
return -1
container(func, [4, 5, 6, 7, 0, 1, 2], 3)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(num):
collect = [1000, 500, 100, 50, 10, 5, 1]
minus = [100, 100, 10, 10, 1, 1, 0]
collect_c = 'MDCLXVI'
minis_c = 'CCXXII_'
ptr = 0
ans = ''
while num > 0:
if num >= collect[ptr]:
ans += collect_c[ptr]
num -= collect[ptr]
elif num >= collect[ptr] - minus[ptr]:
ans += minis_c[ptr] + collect_c[ptr]
num -= collect[ptr] - minus[ptr]
else:
ptr += 1
return ans
container(func, 1994)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(nums, val):
if len(nums) == 0:
return 0
j = 0
for i in range(0, len(nums)):
if nums[i] != val:
nums[j] = nums[i]
j += 1
return j
container(func, [0, 1, 2, 2, 3, 0, 4, 2], 2)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(s, numRows):
if numRows <= 1:
return s
def row(x):
tmp = x % (2 * numRows - 2)
if tmp >= numRows:
return 2 * numRows - 2 - tmp
else:
return tmp
result = ['' for _ in range(numRows)]
for i, item in enumerate(s):
result[row(i)] += item
return ''.join(result)
container(func, 'A', 5)
def display_chain(head):
ptr = head
results = ''
while ptr:
results += str(ptr.val) + '->'
ptr = ptr.next
results = results[:-2]
return results
def func(head, n):
ptr = head
i = 0
delete = ptr
di = 0
while ptr:
ptr = ptr.next
if i - di == n + 1:
delete = delete.next
di += 1
i += 1
if i - di == n + 1:
delete.next = delete.next.next
return head
else:
return delete.next
container(func, build_chain([1, 2, 3, 4]), 3, display=display_chain)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(digits):
if len(digits) == 0:
return []
key = {'2': 'abc', '3': 'def', '4': 'ghi', '5': 'jkl',
'6': 'mno', '7': 'pqrs', '8': 'tuv', '9': 'wxyz'}
ans = ['']
for item in digits:
collect = []
for k in key[item]:
collect.append([s + k for s in ans])
ans = []
for line in collect:
ans.extend(line)
return ans
container(func, '23')
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(x):
x = str(x)
reverse_x = x[::-1]
return x == reverse_x
container(func, -121)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(strs):
if len(strs) == 0:
return ''
ans = strs[0]
for s in strs:
if len(s) == 0:
return ''
i = 0
for i in range(min(len(ans), len(s))):
if ans[i] != s[i]:
break
else:
i += 1
ans = ans[:i]
if len(ans) == 0:
return ''
return ans
container(func, [["abab", "aba", ""]])
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(nums):
n = len(nums)
if n < 2:
return nums
i = n - 1
while i > 0 and nums[
i - 1] >= nums[i]: # 要是前者大于等于后者 则不是要调整的目标 继续前移 ！第一遍出错就是这儿没有等于
i -= 1
if i == 0 and nums[i] == max(nums): # 此数为最大数
return nums.reverse()
else: # 151 i=1
j = n - 1
while j > i - 1 and nums[j] <= nums[i - 1]:
j -= 1
temp = nums[i - 1] # i-1为小数 j为大数 交换之
nums[i - 1] = nums[j]
nums[j] = temp
re = nums[i:]
for h in range(len(re)):
nums[n - 1 - h] = re[h]
return nums
container(func, [1, 3, 2])
s.add(item)
else:
return True
return False
for i in range(9):
if check(board[i]):
return False
for j in range(9):
if check([board[i][j] for i in range(9)]):
return False
for k in [0, 3, 6]:
for m in [0, 3, 6]:
if check([
board[i][j] for i in range(k, k + 3)
for j in range(m, m + 3)
]):
return False
return True
container(func, [["5", "3", ".", ".", "7", ".", ".", ".", "."],
["6", ".", ".", "1", "9", "5", ".", ".", "."],
[".", "9", "8", ".", ".", ".", ".", "6", "."],
["8", ".", ".", ".", "6", ".", ".", ".", "3"],
["4", ".", ".", "8", ".", "3", ".", ".", "1"],
["7", ".", ".", ".", "2", ".", ".", ".", "6"],
[".", "6", ".", ".", ".", ".", "2", "8", "."],
[".", ".", ".", "4", "1", "9", ".", ".", "5"],
[".", ".", ".", ".", "8", ".", ".", "7", "9"]])
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(x):
a = ''
if x < 0:
a = '-'
x = -x
x = str(x)
x = a + x[::-1]
x = int(x)
if x > 2**31 - 1 or x < -2 ** 31:
return 0
return x
container(func, -120)
from utils.utils import container, random_str
from collections import defaultdict
import random
def func(nums):
if len(nums) == 0:
return 0
j = 1
for i in range(1, len(nums)):
if nums[i] != nums[j - 1]:
nums[j] = nums[i]
j += 1
return j
container(func, [0])
def func(nums):
if len(nums) < 3:
return []
collect = defaultdict(int)
for item in nums:
collect[item] += 1
nums = sorted(list(set(nums)))
ans = []
for i in range(len(nums)):
if collect[nums[i]] > 1:
start = i
else:
start = i + 1
for j in range(start, len(nums)):
f = -nums[i] - nums[j]
if nums[j] > f:
break
if f in collect:
if f == nums[j] and collect[f] < 2:
pass
elif f == nums[j] == nums[i] and collect[f] < 3:
pass
else:
ans.append([nums[i], nums[j], f])
return ans
container(func, [-1, 0, 1, 0])