Replace two substrings (of a string) with each other
Given 3 strings S, A and B. The task is to replace every sub-string of S equal to A with B and every sub-string of… Read More »
Category Archives: Strings
Maximize the value of A by replacing some of its digits with digits of B
Given two string A and B which represents two integers, the task is to print the maximized value of A after replacing 0 or more… Read More »
Minimum number of operations to move all uppercase characters before all lower case characters
Given a string str, containing upper case and lower case characters. In a single operations, any lowercase character can be converted to an uppercase character… Read More »
Lexicographically largest sub-sequence of the given string
Given a string str containing lowercase characters, the task is to find the lexicographically largest sub-sequence of str. Examples: Input: str = “abc” Output: c… Read More »
Count the number of common divisors of the given strings
Given two strings a and b, the task is to count the number of common divisors of both the strings. A string s is a… Read More »
Sub-string that contains all lowercase alphabets after performing the given operation
Given a string str containing lower case alphabets and character ‘?’. The task is to check if it is possible to make str good or… Read More »
Maximum count of sub-strings of length K consisting of same characters
Given a string str and an integer k. The task is to count the occurrences of sub-strings of length k that consist of the same… Read More »
Make palindromic string non-palindromic by rearranging its letters
Given a string str containing lowercase alphabets (a – z). The task is to print the string after rearranging some characters such that the string… Read More »
Form lexicographically smallest string with minimum replacements having equal number of 0s, 1s and 2s
Given a string str of length n (n is a multiple of 3) containing characters only from the set {0, 1, 2}. The task is… Read More »
Count occurrences of a string that can be constructed from another given string
Given two strings str1 and str2 where str1 being the parent string. The task is to find out the number of string as str2 that… Read More »
Operations required to make the string empty
Given a string str, the task is to make the string empty with the given operation. In a single operation, you can pick some characters… Read More »
Modify the string by swapping continuous vowels or consonants
Given a string str. The task is to modify the string by swapping two adjacent characters if both of them are vowels or both of… Read More »
Validation of Equation Given as String
Given a string in the form of an equation i.e A + B + C – D = E where A, B, C, D and… Read More »
Find the lexicographically largest palindromic Subsequence of a String
Given a string . The task is to find the lexicographically largest subsequence of the string which is a palindrome. Examples: Input : str =… Read More »
Check if a binary string contains consecutive same or not
Given a binary string str consisting of characters ‘0’ and ‘1’. The task is to find whether the string is valid or not. A string… Read More »
