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Articles on Trending Technologies
Technical articles with clear explanations and examples
Count of K length substrings containing exactly X vowels
In this problem, we need to find a total number of substrings of length K containing exactly K vowels. We will see two different approaches to solving the problem. We can use a naïve approach that checks the number of vowels in each substring of length K. Also, we can use the sliding window approach to solve the problem. Problem statement – We have given a string str of length N containing lowercase and uppercase alphabetical characters. We need to count the total number of substrings of length K which contains exactly X vowels. Sample examples Input– str = ...
Read MoreCheck if substring S1 appear after any occurrence of substring S2 in given sentence
In this problem, we need th check whether the substring S1 appears after any occurrence of the substring S2 in the given string S. We can compare the starting index of S1 and S2 in the string S to solve the problem. Problem statement – We have given three substrings named S, S1, and S2. The string S always contains S1 as a substring. We need to check whether the substring S1 appears after any occurrence of the substring S2 in the given string S. Sample examples Input – S = "abxtutorialspointwelcomepoint", S1 = "welcome", S2 = "point"; ...
Read MoreCheck if any permutation of a given string is lexicographically larger than the other given string
We have given two strings and need to check whether the given string's permutations exist such that one permutation can have a larger character than another permutation at the ith index. We can solve the problem by sorting the string and comparing each character of the string one by one. Also, we can solve the problem using the frequency of characters of both strings. Problem statement – We have given a string str1 and str2 of length N. We need to check whether any permutations of both strings exist such that the permutation of one string is lexicographically larger than ...
Read MoreC++ Program for Longest subsequence of a number having same left and right rotation
In this problem, we need to find the maximum length of the sub sequence with the same left and right rotations. The left rotation means moving all characters of the string in the left direction and the first character at the end. The right rotation means moving all string characters in the right direction and the last character at the start. Problem statement – We have given string str containing numeric digits and need to find the sub sequence of maximum length with the same left and right rotations. Sample examples Input – str = "323232", Output – 6 Explanation– ...
Read MoreHow to Convert Char to Int in Java?
In Java, smaller datatype can be converted to bigger datatype. Here, we will see how to convert char datatype to int datatype. The char data type is a single 16-bit Unicode character. It has a minimum value of '\u0000' (or 0) and a maximum value of '\uffff' (or 65, 535 inclusive). The int data type is a 32-bit signed two's complement integer, which has a minimum value of -231 and a maximum value of 231-1. Let's deep dive into this article, to know how it can be done by using Java programming language. For instance Suppose the given ...
Read MoreAverage value of set bit count in given Binary string after performing all possible choices of K operations
In this problem, we need to find the average value of the count of set bits after performing K operations of all choices on the given string. There can be a brute force approach to solve the problem, but we will use the probability principles to overcome the time complexity of the brute force approach. Problem statement – We have given an integer N, array arr[] containing K positive integers, and a binary string of length N containing only set bits. We need to find the average value of the count of set bits after performing all possible choices ...
Read MoreCreate a Matrix and Fill Primary Diagonal with 1 and Secondary Diagonal with 2
In Java, a matrix can be represented using a two-dimensional array. Matrices are used for storing and manipulating data that have a tabular structure. Matrices have several properties and operations associated with them, such as addition, subtraction, multiplication, transposition, and determinant calculation. As per the problem statement we have to Create a Matrix and Fill Primary Diagonal with 1 and Secondary Diagonal with 0. Let's start! For instance Suppose we have 4*4 matrix i.e. 4 rows and 4 columns. After performing the operation on matrix, the result will be: Enter the size of the matrix: ...
Read MoreJava Program to Create a Matrix and Fill it With Palindrome Number
In Java, a matrix can be represented using a two-dimensional array. Matrices are used for storing and manipulating data that have a tabular structure. Matrices have several properties and operations associated with them, such as addition, subtraction, multiplication, transposition, and determinant calculation. As per the problem statement we have to Create a Matrix and Fill it with Palindrome Number. Let's start! For instance Suppose we have 4*5 matrix: After performing the operation on matrix, the result will be: Enter the number of rows: 4 Enter the number of columns: 5 Matrix with Palindrome ...
Read MoreJava Program to Create a Matrix and Fill it With Armstrong Number
In Java, a matrix can be represented using a two-dimensional array. Matrices are used for storing and manipulating data that have a tabular structure. Matrices have several properties and operations associated with them, such as addition, subtraction, multiplication, transposition, and determinant calculation. As per the problem statement we have to Create a Matrix and Fill it with Armstrong Number. Let's start! For instance Suppose we have 4*3 matrix: After performing the operation on matrix, the result will be: Enter the number of rows: 4 Enter the number of columns: 3 Armstrong Matrix: ...
Read MoreFind Difference Between Sum of All Rows and All Columns in Java
In Java, a matrix can be represented using a two-dimensional array. Matrices are used for storing and manipulating data that have a tabular structure. Matrices have several properties and operations associated with them, such as addition, subtraction, multiplication, transposition, and determinant calculation. As per the problem statement we have to add sum of all individual rows and columns. Then we need to perform the difference between these added rows and columns and display the result. Let's start! For instance Suppose the original matrix is: {4, 2, 1}, {3, 5, 6}, {8, 9, 7} After performing ...
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