indexof with the arrays

Question

how to use Indexof with array?

Sachin Singh · Answer

suppose this is your array string[] arr = new string[10]{ "sachin" , "anmol" , "Suresh" , "Raina" , "Mahendra" , "Dhoni" , "Rahul" , "Dravid" , "Sourabh" , "Ganguly" } Now, int a = Array.IndexOf(arr, "Dhoni" ); // 5

Muhammad Imran Ansari · Answer

indexOf() method searches for the specified object and returns the index of its first occurrence in a one-dimensional array. It returns the first index (position) of a specified value. When it returns -1 it means the value is not found in the Array. The indexOf() method starts at a specified index and searches from left to right. You can check more example from the floowing link: https://www.javascripttutorial.net/javascript-array-indexof/

Gajendra Jangid · Answer

The indexOf() method returns the first index (position) of a specified value.The indexOf() method returns -1 if the value is not found.The indexOf() method starts at a specified index and searches from left to right.By default the search starts at the first element and ends at the last.Negative start values counts from the last element (but still searches from left to right). Example: const fruits = ["Banana", "Orange", "Apple", "Mango", "Apple"]; let index = fruits.indexOf("Apple", -1);

o abuzaid · Answer

thanks all for your help omran abuzaid

Tuhin Paul · Answer

Starting the search from a specific index: const colors = ["red", "green", "blue", "yellow"]; const yellowIndex = colors.indexOf("yellow", 2); // Start search from index 2 console.log(yellowIndex); // Output: 3 (index of "yellow")

Tuhin Paul · Answer

Finding the index of a specific element: const fruits = ["apple", "banana", "orange", "banana"]; const bananaIndex = fruits.indexOf("banana"); console.log(bananaIndex); // Output: 1 (index of the first "banana")

Bhavesh Jha · Answer

Let us consider an array having name arr of string type. string[] arr = new string[5]{"Bhavesh","Sachin","Sundar","Sparsh","Ritesh"}; Console.WriteLine(Array.IndexOf(arr,"Bhavesh")); //output:0 Console.WriteLine(Array.IndexOf(arr,"Sachin")); //output:1 Console.WriteLine(Array.IndexOf(arr,"Sundar")); //output:2 Console.WriteLine(Array.IndexOf(arr,"Sparsh")); //output:3 Console.WriteLine(Array.IndexOf(arr,"Ritesh")); //output:4