LEETCODE80. 删除排序数组中的重复项
俺的:
class Solution:
def removeDuplicates(self, nums: List[int]) -> int:
if(len(nums)==0):
return 0
i=0
while i<len(nums):
s=i
while i<len(nums) and nums[i]==nums[s]:
i+=1
if i-s>2:
for j in range(s+2,i):
nums[j]='x'
i=0
while i<len(nums):
if nums[i]=='x':
del nums[i]
i-=1
i+=1
return len(nums)
评论区的:
思路:i是新数组末尾,若e不等于nums[i-1]表示当前e应该写到新数组里,或者i<1时也肯定要写到新数组里。
class Solution:
def removeDuplicates(self, nums: List[int]) -> int:
i=0
for e in nums:
if i<1 or nums[i-1]!=e:
nums[i]=e
i+=1
return i
进击的小🐴农