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In this problem, we need to extract the integer from the given string by following the rules in the problem statement. We can solve the problem by checking if the initial substring of the string follows each rule given for the valid integer value. Problem statement – We have given string digits containing the numeric digits, ‘.’, ‘+’, and ‘-‘ characters. We need to extract the valid integer value from the given string. Rules for valid integers It should not contain the leading zeros and whitespaces. The integer should either start with a sign or digits. When any sign ... Read More
In this problem, we need to find the original string from the encrypted string using the given encryption rules. We can get the original string if we use the encryption rules in reverse order. Problem statement – We have given an encrypted string. Also, we have given an array of strings containing multiple strings. We need to find the string from the array, so if we encrypt according to the below rules, we can get the encrypted string. Encryption rules The encrypted string should start with a positive integer, representing a number of uppercase letters in the original string. ... Read More
In this problem, we need to find the largest even valued substring of the given string. The even string always contains the 2, 4, 6, 8, 0 at last. So, we can take all substrings of the given string, and if any substring is even and greater than the maximum substring, we can update the maximum substring value. Problem statement – We have given string str containing numeric digits only. We need to find the largest substring of the str, which is an even integer value. Sample examples Input str = "1234789" Output 123478 Explanation ... Read More
In this problem, we will convert the sentence into Pig Latin. We can append the first character of each word at the last and append ‘ay’ after that. We will see three approaches to convert the given sentence into the Pig Latine. The logic is we can append the first character at the end and remove it from the string. After that, we can append ‘ay’ to the word. Problem statement – We have given a string alpha containing multiple words. We need to encode the string into Pig Latin. Note – The Pig Latine is a word encryption ... Read More
In this problem, we need to check whether the string follows the given pattern. We can solve the problem by mapping each character to the word. If any character of the pattern maps more than one word, we can say that the string is not following the pattern. Problem statement – We have given a ‘pat’ string containing N characters and an ‘alpha’ string containing N words. The given task is to check whether the ‘alpha’ string follows the pattern of the ‘pat’ string. Note – We can say that the ‘alpha’ string follows the pattern when the word matches ... Read More
In the current 21st century, handling data is the most challenging task for organizations with a high volume of data and with the development of data science and machine learning it has become easier to access. The spaces are also known as the whitespaces in between the characters of strings. The space has no data or it is simply empty and it creates a problem for programmers while coding. So, in order to check for spaces in the string involves many methods and some are explained here. Strings are composed of characters and Python Language comes under the OOPS concept ... Read More
In this problem, we need to find the shortest string, which is a multiple of string A and string B. The problem is very similar to finding the LCM (Least common multiplier) of two numbers. We can find the LCM of both strings’ lengths and make both strings’ lengths equal to LCM by concatenating to itself. After that, we can compare the string to check if it is possible to get the shortest string which multiple of A and B. Problem statement – We have given string A and string B of different lengths. We need to find the shortest ... Read More
In this problem, we will find the sum and product of the K maximum and minimum Fibonacci numbers in the array. The given problem is very basic and aims to focus on improving the problem-solving skills of beginners. The main goal of the problem is to introduce how to filter the Fibonacci numbers from the given array of elements and sum and product minimum and maximum Fibonacci numbers. Problem Statement We have given a nums[] array containing the N integer values. Also, we have given K positive integer. We need to find the sum and product of the K minimum ... Read More
One of the most important data types is List in the Python language. Various inbuilt methods to be available in python to manipulate the list items like append(), insert(), extend() and so on. Multiple approaches help in finding the alternate front-rear sum of an array. The array is given with n elements and the process involved are first element is added to the last element of the array, second element of an array is added to the second last element value and it continues until all the elements are added together. For example, let’s take the array, [40, 50, ... Read More
The strings consist of characters and to transform them into float data type, Python facilitates us with various methods using the inbuilt function. With the help of these inbuilt functions, we can check for the float strings easily. In this article, the user will learn how to check whether a string contains a float value. To achieve this, three strategies are demonstrated to verify float string. Isdigit() method is also used to check if the given string has only digits. Then the count() and replace() are used to check if the string contains decimal values and other characters of the ... Read More