How-to articles, tricks, and solutions about LIST

To access the index in a 'for' loop in Python, you can use the built-in 'enumerate' function.

In Python, you can use the string module's ascii_lowercase and ascii_uppercase constants to get the range of lowercase and uppercase letters in the ASCII character set respectively.

To append an integer to the beginning of a list in Python, you can use the insert() method.

In Python, you can check if an item is in a list using the in keyword.

In Python, you can use the map() function along with the built-in int() function to convert all strings in a list to integers.

To convert a List to an array in Java, you can use the toArray() method of the List interface. This method returns an array containing all of the elements in the list in the proper order.

To convert a Set to a List in Java without creating a new List object, you can use the List constructor that takes a Collection as an argument.

In Python, you can convert a dictionary to a list of its keys or values using the keys() and values() methods, respectively.

You can create an empty list of a certain size in Python using the following methods:

del: The del keyword is used to remove an item from a list by its index.

No, the isEmpty() method of the java.util.List interface does not check if the list itself is null.

The fastest way to check if a value exists in a list is to use the in operator.

Here is a Python code snippet that demonstrates how to find and replace elements in a list:

Here is a Python code snippet for finding the average of a list of numbers:

To find the index of an item in a list in Python, you can use the index() method of the list.

You can use the set data type to find the difference between two lists with unique entries.

In Pandas, a DataFrame is a 2-dimensional labeled data structure with columns of potentially different types.

In Python, you can use the set() function to get the unique values from a list.

You can use the enumerate() function along with max() or min() to get the index of the maximum or minimum item in a list in Python.

To compare two lists and return the matches, you can use the built-in intersection() method of the set data type.

You can use the values() method to get a list of values from a dictionary:

You can use the zip function to create a dictionary from separate lists of keys and values like this:

You can use the random module's choice function to select a random element from a list.

To sort a List alphabetically in Java, you can use the Collections.sort method and pass in your List as an argument.

To check if a list is empty in Python, you can use an if statement and the len() function.