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In this article we are going to learn how to use internla python functions like len(), slicing(), replace(), ljust() to retain first N element of a string and replace the remaining by k. The python strings are easily made by simply surrounding letters in quotations. Python treats single quotes and double quotes the same way. Assigning a value to a variable and creating a string is really straightforward. Example Assume we have taken an input string N, K values. We will now retain the first N characters of an input string and replace it with the given K character ... Read More
Python has in build functions like slicing() and replace() that can be used for replacing the occurrence by k except the first character. In Python, strings are among the most often used types. These are easily made by simply surrounding letters in quotations. Python treats single quotes and double quotes the same way. Assigning a value to a variable and creating a string is really straightforward. Example Assume we have taken an input string and k. We will now replace all the k characters except the first in an input string with the input character using the above methods. Input ... Read More
In Python, dictionary is a implementation of a data structure known as an associative array. A dictionary is made up of a group of key-value pairs. Each key-value combination corresponds to a key and its corresponding value. In this article, we will learn how to convert into a Set of dictionary values in python. Methods Used The following are the various methods to accomplish this task: Using generator expression and {} Using values() and set() functions Using Counter() function Example Assume we have taken an input dictionary. We will now extract all the values of a ... Read More
Python's implementation of a data structure known more commonly as an associative array is a dictionary. A dictionary is made up of a group of key-value pairs. Each key-value combination corresponds to a key and its corresponding value. Given a dictionary with some random key-value pairs, In this article, we will learn how to rotate the given dictionary by K in python. Methods Used The following are the various methods to accomplish this task: Using list comprehension, items(), and dictionary comprehension Using dictionary comprehension, deque.rotate(), and items() functions Example Assume we have taken an input dictionary and ... Read More
In python, a matrix is a particular type of two-dimensional array in which all of the data elements must have exactly the same size. Hence, every matrix is also a two-dimensional array, but not the other way around.For many mathematical and scientific tasks, matrices are essential data structures. In this article, we will learn a python program to reverse every Kth row in a Matrix. Methods Used The following are the various methods to accomplish this task − Using for loop and reversed() function Using list comprehension and slicing Using index() and reverse() functions Using range() function ... Read More
In Python, dictionary is a implementation of a data structure known more commonly as an associative array. A dictionary is made up of a group of key-value pairs. Each key-value combination corresponds to a key and its corresponding value. In this article, we will learn a python program to print the sum of all key-value pairs in a dictionary. Methods Used The following are the various methods to accomplish this task: Using For Loop and append() function(dictionary traversal method) Using dict.keys() Function Using For Loop, keys() and values() Functions Example Assume we have taken an input dictionary. ... Read More
In python we can use not operator or subtraction operation as well as counter function to the number that are in range but not in set. A Python set is a grouping of unsorted elements. The set's elements must all be distinct, and unchangeable, and the sets must eliminate any duplicates. Sets can be changed after they are created because they are mutable. Example Assume we have taken an input set and range Input inputSet = {3, 10, 2, 11, 15, 4, 1} lowIndex, highIndex = 0, 8 Output [0, 5, 6, 7] Here 0, ... Read More
To find the tuple indices from other tuple list we can use enumerate function and index function of Python. An ordered and immutable group of objects is referred to as a tuple. Sequences are just what tuples and lists both are. Tuples and lists vary in that tuples cannot be altered, although lists may, and because tuples use parentheses while lists use square brackets. Example Assume we have taken an input list containing tules and another search tuple list. We will now search the indices of the search tuple list in the given input list Input inputList = [(1, 3), ... Read More
Python's implementation of a data structure known more commonly as an associative array is a dictionary. A dictionary is made up of a group of key-value pairs. Each key-value combination corresponds to a key and its corresponding value. In this article, we will learn a python program to extract dictionaries with the maximum number of keys. Methods Used The following are the various methods to accomplish this task: Using for loop and len() function Using list comprehension and max() function Example Assume we have taken an input list containing multiple dictionaries. We will now extract dictionaries ... Read More
In Python, strings are among the most often used types. These are easily made by simply surrounding letters in quotations. Python treats single quotes and double quotes the same way. Assigning a value to a variable and creating a string is really straightforward. In this article, we will learn how to expand a character frequency string in python. Methods Used The following are the various methods to accomplish this task: Using zip() and join() functions Using re(regex) module and join() function Without using any built-in functions Example Assume we have taken an input string containing characters followed ... Read More