target_element=2 Example 1: Determine Index of All Matching Elements in List Using for Loop & enumerate() Function In this first example, we will use afor loopalong with theenumerate() functionto get the index o
To handle the case where the search element is not found, we used a try-except block. The try block contains a call to my_list.index(search_element), which attempts to find the index of the search element in the list. If the element is found, the value of index is set to the ...
C# List FindIndexThe FindIndex method returns the zero-based index of the first element that matches the predicate. If no element is found, it returns -1. public int FindIndex(Predicate match); public int FindIndex(int startIndex, Predicate match); public int FindIndex(int startIndex, int...
(element).forEach...test 用来储存数组过滤后的元素 return !...indexArray.includes(index)} // 返回不在indexArray中的元素 ) 过滤后的数组还剩423条数据 代码优化: object.values(obj...=null; })新数组,和Object.values(v)原数组 的长度相等,就代表 这个对象的所有属性都没有null,也就是最外层...
This article mainly introduces how to find the position of an element in a list using Python, which is of great reference value and hopefully helpful to everyone. How to Find the Position of an Element in a List Problem Description Given a sequence containing n integers, determine the ...
Example 1: Get Index of Last Occurrence of Element In this example, we will take a list of elements (say strings). We will then find the last index of element"bc"in the list using List.lastIndexOf() function. Kotlin Program </> ...
FindLastIndex(Int32, Predicate<T>) 搜索与由指定谓词定义的条件相匹配的元素,并返回List<T>中从第一个元素到指定索引的元素范围内最后一个匹配项的从零开始的索引。 FindLastIndex(Int32, Int32, Predicate<T>) 搜索与指定谓词所定义的条件相匹配的元素,并返回List<T>中包含指定元素个数、到指定索引结束的...
# Define a function to find the kth largest element in a listdefkth_largest_el(lst,k):# Sort the list in descending order (reverse=True)lst.sort(reverse=True)# Return the kth largest element (0-based index, so k-1)returnlst[k-1]# Create a list of numbersnums=[1,2,4,3,5,4,...
FindLastIndex(Int32, Predicate<T>) 搜索与由指定谓词定义的条件相匹配的元素,并返回List<T>中从第一个元素到指定索引的元素范围内最后一个匹配项的从零开始的索引。 FindLastIndex(Int32, Int32, Predicate<T>) 搜索与指定谓词所定义的条件相匹配的元素,并返回List<T>中包含指定元素个数、到指定索引结束的...
FindLastIndex(Int32, Int32, Predicate<T>)使用谓词委托查找集合后半部分中最后一本计算机书籍的FindComputer索引。 C#复制 usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Xml.Linq;namespaceFind{classProgram{privatestaticstringIDtoFind ="bk109";privatestaticList<Book> Books =newList...