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...
list.index(x,start,end) Here,startandendare optional.xis the element that we need to find in the list. Let’s see the example below. consonants=["b","f","g","h","j","k"]i=consonants.index("g")print("The index of g is:",i) ...
1) Using index() MethodThe index() method is used to find the index value of the specific element.Syntax:list_name.index(item) It will print the index value of an item from the list_name.Example 1:# list list = ["Gwalior", "Bhopal", "Indore", "Noida", "Delhi", "Ajmer"] #...
We also have theindex()function in Python that returns the index of the given element if it is present in the list. If not, then it throws aValueError. To get the index of the maximum element in a list, we will first find the maximum element with themax()function and find its index...
callback(element, index, array):接收当前元素、索引和原数组作为参数,需返回布尔值。 thisArg(可选):指定回调函数中的 this 上下文。 特点: 短路操作:找到第一个匹配项后立即停止遍历。 适用场景:查找对象数组中符合条件的对象。 const users = [
the indices 'i' where 'fn(x)' is True for an element 'x' in 'lst'.return[ifori,xinenumerate(lst)iffn(x)]# Call the 'find_index_of_all' function with an example list and a lambda function that checks if a number is odd.print(find_index_of_all([1,2,3,4],lambdan:n%2==...
Finding the index of an item in a list: In this tutorial, we will learn how to find the index of a given item in a Python list. Learn with the help of examples.
By searching element i mean the value which i am looking for in the array. For example say we have an array Arr[5] = {1, 2, 3, 4, 5} and i am looking for 3 here in the array Arr. So 3 is the searching element. Last edited on Dec 14, 2016 at 12:10pm Dec...
Use thenumpy.where()Function to Find the Indices of All the Occurrences of an Element in Python TheNumPylibrary has thewhere()function, which is used to return the indices of an element in an array based on some condition. For this method, we have to pass the list as an array. The ...
Use theindex()Function to Find the First Index of an Element in a NumPy Array In this method, we will first convert the array to a list using thetolist()function. Then we will use theindex()function, which will return the position of the specified element. ...