Adc = ['Nhooo.com','Ruby','C++','C#','Java','Python'] # 使用Array.at()方法获取最后一个元素 puts "Array.at(Array.count()-1) method" puts "The first element of Array : #{Adc.at(Adc.count()-1)}" # 使用Array.last方法获取最后一个元素 puts "Array.last method" puts "The first...
Python Get Class Name of an Instance Python Get the last element of a list Python get Even Integers from Python List Python Get Dictionary Keys as a List Get the First Element of a Tuple in Python How to Get Shape of List in Python How to Get Array Length in Python Get the Index of...
Python99 P101: Find the last element of a list 求列表中最后一个元素 求列表中最后一个元素。用单元测试描述为: Python内建的list是有序序列,其中每个元素都可以通过位置索引直接访问。且Python内建了函数len,用读取任意有序序列的长度。先用len读取list的长度,将长度减去一即为末尾元素的位置索引。 位置...
1. Problem Descriptions:Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value.If target is not found in the array, return [-1…
解决思路:二分查找直到找到第一个目标值,再对目标值左右进行二分查找 Python代码: classSolution(object):defsearchRange(self, nums, target):""":type nums: List[int] :type target: int :rtype: List[int]"""l=0 r= len(nums)-1whilel <=r : ...
# Quick examples of removing last element from list# Initialize the list of stringstechnology=["Python","Spark","Hadoop","Pandas"]# Example 1: Remove the last element from the list# Using pop() methodlast_element=technology.pop()# Example 2: Remove the last element from the list# Using...
输入:nums = [], target = 0 输出:[-1,-1] 来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array python class Solution: def searchRange(self, nums: [int], target: int) -> [int]: ...
last= len(nums) - 1found=False results= [-1, -1]ifnums ==[]:returnresultsiftarget < nums[0]ortarget >nums[last]:returnresultswhilefirst <= lastandnotfound: mid= (first + last) // 2 #找到了,分别继续向前,向后查找,直到找到第一个和最后一个targetiftarget ==nums[mid]: ...
return [-1, -1] while low<=high: mid = (low+high)//2 if nums[mid]==target: break elif nums[mid]<target: low = mid+1 else: high = mid-1 if nums[mid]==target: mid_low = mid mid_high = mid while nums[mid_low]==target: ...
So it will delete the elements starting from index3upto the end of the list Remove last element from a list in python using pop() We can remove any element at a specific index usingpop()function. We just have to pass the index of the element and it will remove the element from the...