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Scheduling algorithms in the operating system execute the processes based on their arrival time or by their priority. Each algorithm chooses the processes that are in waiting to ready queue by preemption or non-preemption methods. Preemptive algorithms provide access to the CPU to the process which has higher priority and preempt any other process which is already running with lower priority. But in the case of non-preemptive scheduling, when processes start their execution, it cannot be preemptive even when higher priority processes are in the ready state. The traditional round-robin scheduling algorithm is a preemptive one where each process gets ... Read More
Problem Statement We have given string str and a binary string B. The length of both strings is equal to the N. We need to check if we can make string str palindromic by swapping the characters of it multiple times at any pair of indices that contains unequal characters in string B. Sample Examples Input str = ‘AAS’ B = ‘101’ Output ‘YES’ Explanation We can swape the str[1] and str[2] as B[1] and B[2] are not equal. The final string can be ‘ASA’. Input str = ‘AASS’ B = ‘1111’ Output ‘No’ Explanation ... Read More
In Python, tuples are immutable sequences that can contain a collection of elements. We can multiply all the items in a tuple using various methods like using a for loop, using the reduce() function from the functools module, using list comprehension, and the math.prod() function, etc. In this article, we will explore all these methods and implement the functions to multiply all items in a tuple in Python. Method 1:Using for loop This method is straightforward and easy to understand. It involves iterating over each item in the tuple and multiplying them one by one using a for loop. Syntax ... Read More
In C++, the string is a collection of various alphanumeric and special characters. We can create a string using the ‘string’ data type in C++. Problem Statement We have given a length of the string and one single character, and we require to generate a string of a given length containing the single character. In C++, we can define the string of a particular length by hard coding the values, but when we require to generate a string of different lengths and use the given character, we require to use the below approaches. Sample Examples Here are the sample ... Read More
Problem Statement We have given a string ‘str’, containing the alphabetical characters in uppercase or lowercase. We require to check if uppercase characters are used correctly in the string. Followings are the correct way to use uppercase characters in the string. If only the first character is in uppercase, the other characters are in lowercase. If all characters of a string are in lowercase. If all characters of the string are in uppercase. Sample examples Input "Hello" Output "valid" Explanation In "Hello", only the first character is in uppercase, and others are in lowercase, so it ... Read More
In Python, we can group strings on the kth character using several methods like using a dictionary, leveraging the groupby() function from itertools, and utilizing the defaultdict from the collection module. Grouping strings on the kth character is useful when manipulating and performing complex operations on strings. In this article, we will explore different methods to group tuples by their kth index element, using various techniques, and demonstrate their implementation. Method 1:Using a Dictionary One approach to group strings on the Kth character is by using a dictionary. We can iterate through the list of strings, extract the Kth character ... Read More
We can get the Nth Word in a Given String in Python using string splitting, regular expressions, split() method, etc. Manipulating strings is a common task in programming, and extracting specific words from a string can be particularly useful in various scenarios. In this article, we will explore different methods to extract the Nth word from a given string using Python. Method 1:Splitting the String This method involves splitting the string into a list of words and accessing the desired word based on its index. Syntax words = string.split() Here, the split() method splits the string based on whitespace ... Read More
In the Java programming language, the process of converting one data type to another is known as typecasting. At times, it becomes necessary to convert an integer data type to a byte data type. However, it is crucial to have an understanding of the byte data type's range. The byte data type is an 8-bit signed two's complement integer that has a minimum value of -128 and a maximum value of 127. If the integer value falls within this range, then it can be directly typecast to a byte variable. However, if the integer value is not within this range, ... Read More
By using the 'getBytes()' function, one may convert a string into a byte array in the world of Java programming. The end result of this procedure is the acquisition of the starting string's representation as a byte array, with the method's specifications dictating the encoding. By using the 'getBytes()' function, there are two different ways to convert a string to a byte array in Java. The first strategy involves using the JVM's default charset encoding, which is an encoding technique. The second method depends on a specific charset encoding being supplied, with the requirements of the application in question determining ... Read More
Java programming involves the conversion of String to byte array, a handy technique for a multitude of purposes including network communication or data encryption. To achieve this, the String class provides an array of methods for such conversion, with the getBytes() method being one of them. It is crucial to note that choosing the appropriate encoding is crucial since each encoding utilizes different regulations when it comes to character to byte value mapping. In this article, we will delve into two techniques for converting a String to a byte array using Java's getBytes() method. Additionally, we will provide an ... Read More