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Server Side Programming Articles
Page 1562 of 2109
Find Last Palindrome String in the given Array
In this problem, we need to find the last palindrome string in the array. If any string is the same in reading, either we start to read from the start or end, we can say the string is a palindrome. We can compare the starting and ending characters to check whether the particular string is palindromic. Another way to find the palindromic string is to reverse the string and compare it with the original string. Problem statement – We have given an array of length N containing the different strings. We need to find the last palindrome string in the ...
Read MoreFind any permutation of Binary String of given size not present in Array
In this problem, we need to find all missing binary strings of length N from the array. We can solve the problem by finding all permutations of a binary string of length N and checking which permutations are absent in the array. Here, we will see iterative and recursive approaches to solve the problem. Problem statement – We have given an array arr[] of different lengths containing the binary strings of length N. We need to find all the missing binary strings of length N from the array. Sample examples Input – arr = {"111", "001", "100", "110"}, N = ...
Read MoreCount of substrings containing exactly K distinct vowels
In this problem, we need to count the total number of substrings of string str containing exactly K distinct vowels. We can solve the problem in two different ways. The first approach is to traverse all substrings and count the number of vowels in each substring. We can also use the map data structure to optimize the code of the first approach. Problem statement – We have given string str of length N. The string contains uppercase and lowercase alphabetical characters. Also, we have given integer K. We need to find the total number of substrings of str containing exactly ...
Read MoreCount 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 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 MoreThe time when the minute hand and the hour hand coincide after a given hour
When the minute hand moves from 12 to 12 in one hour, the hour hand also moves from the previous hour to the next. Hence, every hour, the minute hand and the hour hand coincide once. Problem Statement Given an input hour, find the time in minutes when the hour hand and the minute hand coincide within the next hour. Examples Input − Hour = 4 Output − Coinciding time: 240/11 minutes. We will discuss the explanation further with the approach. Input − Hour = 5 Output − Coinciding time: 300/11 minutes. Explanation and the Approach ...
Read MoreSum of the series 5+55+555+.. up to n terms
5, 55, 555, ... is a series that can be derived from geometric progression and, thus, computed with the help of GP formulae. Geometric progression is a type of series in which each succeeding term is the product of some specific term (ratio) with the preceding term. We will utilize the knowledge of GP, to find the sum of the given series. Problem Statement Given a number n, find the sum of the series 5+5+555+... up to n terms. Examples Input − N = 3 Output − 595 Explanation 5 + 5 + 555 = 595. ...
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