Python List remove()

How can you insert an element at a given index in a given list? Python’s remove() method is your friend. This tutorial shows you everything you need to know to help you master an essential method of the most fundamental container data type in the Python programming language. Definition and Usage: The list.remove(element) method removes the first occurrence of the element from an existing list. It does not, however, remove all occurrences of the element in the list! Here’s a short example: >>> lst = [1, 2, 99, 4, 99]…

Read More
java 

How to Remove a Key, Value, or Entry from an HashMap in Java 8 – Example Tutorial

In the last article, I have shown how to remove key/value pairs from a map in Java based upon some conditions like remove all entries where values are greater than some values. I have told you that you must use the Iterator's remove() method for removing mapping while iteration to avoid ConcurrentModificationException, but that's not required anymore in Java 8. From JDK 8 onwards, you can selectively remove mapping without iterating over Map. The JDK 8 API has added several new methods to existing interfaces e.g. java.util.Collection, java.util.Map, Comparator etc…

Read More

How to Remove an Element From a Python List by Index?

Want to remove an element at a given position i in a list a? Simply use the del a[i] operation to remove the element at index position i. Here’s the Python code example: a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] del a[2] print(a) # [0, 1, 3, 4, 5, 6, 7, 8, 9] del a[0] print(a) # [1, 3, 4, 5, 6, 7, 8, 9] del a[-1] print(a) # [1, 3, 4, 5, 6, 7, 8] del a[2:4] print(a) # [1, 3, 6, 7, 8]…

Read More