搜索插入位置
给定一个排序数组和一个目标值,在数组中找到目标值,并返回其索引。如果目标值不存在于数组中,返回它将会被按顺序插入的位置。
你可以假设数组中无重复元素。
示例 1:
输入: [1,3,5,6], 5 输出: 2
示例 2:
输入: [1,3,5,6], 2 输出: 1
示例 3:
输入: [1,3,5,6], 7 输出: 4
示例 4:
输入: [1,3,5,6], 0 输出: 0
示例代码1:
class Solution(object):
def searchInsert(self, nums, target):
"""
:type nums: List[int]
:type target: int
:rtype: int
"""
if target > nums[-1]:
return len(nums)
for i in range(len(nums)):
if nums[i] == target:
return i
elif nums[i] > target:
return i
示例代码2:
class Solution(object):
def searchInsert(self, nums, target):
"""
:type nums: List[int]
:type target: int
:rtype: int
"""
nums.append(target)
nums.sort()
return nums.index(target)
示例代码3:
class Solution(object):
def searchInsert(self, nums, target):
"""
:type nums: List[int]
:type target: int
:rtype: int
"""
left = 0
right = len(nums) - 1
while left target:
right = mid - 1
else:
left = mid + 1
return left
示例代码4:
class Solution(object):
def searchInsert(self, nums, target):
"""
:type nums: List[int]
:type target: int
:rtype: int
"""
left = 0
right = len(nums)
while left < right:
mid = (left + right) // 2
if nums[mid] == target:
return mid
elif nums[mid] > target:
right = mid
else:
left = mid + 1
return left