How to iterate on a list?

There are 7 ways you can iterate through List.

1. Simple For loop.
2. Enhanced For loop.
3. Iterator.
4. ListIterator.
5. While loop.
6. Iterable.forEach() util.
7. Stream.forEach() util.

1. How do I iterate over a list in Python?
2. What are different ways of iterating over elements in list with example?
3. Can you iterate through a list in Java?
4. How do I traverse a string list?
5. What do we use to add something to a list?
6. How do I check if a list is empty in Python?
7. How do I retrieve an element from a list?
8. What are the two ways to iterate the elements of a collection?
9. Can a list contains another list in Python?
10. How do I compare two lists in Java?
11. What are the two ways to iterate the elements of a collection Javatpoint?
12. What is list iterator in Java?

How do I iterate over a list in Python?

Either of the following ways can be referred to iterate over a list in Python:

1. Using Python range() method.
2. List Comprehension.
3. Using Python enumerate() method.
4. By using a for Loop.
5. By using a while Loop.
6. Using Python NumPy module.
7. Using lambda function.

What are different ways of iterating over elements in list with example?

Ways to iterate over a list in Java

• // Not recommended (see below)! for (int i = 0; i < list. size(); i++) E element = list. ...
• for (E element : list) // 1 - can call methods of element // ...
• for (Iterator<E> iter = list. iterator(); iter. ...
• for (ListIterator<E> iter = list. listIterator(); iter. ...
• Arrays. asList(1,2,3,4).

Can you iterate through a list in Java?

Since Java 8, we can use the forEach() method to iterate over the elements of a list. This method is defined in the Iterable interface and can accept Lambda expressions as a parameter.

How do I traverse a string list?

IterateListExample2.java

1. import java.util.*;
2. public class IterateListExample2.
3. public static void main(String args[])
4. //defining a List.
5. List<String> city = Arrays.asList("Boston", "San Diego", "Las Vegas", "Houston", "Miami", "Austin");
6. //iteration over List using enhanced for loop.

What do we use to add something to a list?

Methods to add elements to List in Python

• append(): append the object to the end of the list.
• insert(): inserts the object before the given index.
• extend(): extends the list by appending elements from the iterable.
• List Concatenation: We can use + operator to concatenate multiple lists and create a new list.

How do I check if a list is empty in Python?

Check if a list is empty in Python

1. if not seq: In Python, empty lists evaluate False , and non-empty lists evaluate True in boolean contexts. ...
2. Using len() function. You can also use the len() function to check if the length of a list is equal to zero, but this is not recommended by PEP8 and considered unpythonic. ...
3. Compare with an empty list.

How do I retrieve an element from a list?

ArrayList get(int index) method is used for fetching an element from the list. We need to specify the index while calling get method and it returns the value present at the specified index.

What are the two ways to iterate the elements of a collection?

There are three common ways to iterate through a Collection in Java using either while(), for() or for-each(). While each technique will produce more or less the same results, the for-each construct is the most elegant and easy to read and write.

Can a list contains another list in Python?

In the sample below, we are using two lists having overlapping values. List1 – This list contains all or some of the elements of another. ... List2 – It is a subset of the first one.

How do I compare two lists in Java?

You can compare two array lists using the equals() method of the ArrayList class, this method accepts a list object as a parameter, compares it with the current object, in case of the match it returns true and if not it returns false.

What are the two ways to iterate the elements of a collection Javatpoint?

There are various ways to traverse the collection elements:

• By Iterator interface.
• By for-each loop.
• By ListIterator interface.
• By for loop.
• By forEach() method.
• By forEachRemaining() method.

What is list iterator in Java?

Like Iterator, ListIterator is a Java Iterator, which is used to iterate elements one-by-one from a List implemented object. It is available since Java 1.2. It extends Iterator interface. Unlike Iterator, It supports both Forward Direction and Backward Direction iterations. ...