Minimize ASCII values sum after removing all occurrences of one character
Given a string str, the task is to minimize the sum of ASCII values of each character of str after removing every occurrence of a… Read More »
Category Archives: Strings
Minimum number of letters needed to make a total of n
Given an integer n and let a = 1, b = 2, c= 3, ….., z = 26. The task is to find the minimum… Read More »
Find k-th character of decrypted string | Set – 2
Given an encoded string where repetitions of substrings are represented as substring followed by count of substrings. For example, if encrypted string is “ab2cd2” and… Read More »
Minimum number of bracket reversals needed to make an expression balanced | Set – 2
Given an expression with only ‘}’ and ‘{‘. The expression may not be balanced. The task is to find minimum number of bracket reversals to… Read More »
Find the first maximum length even word from a string
Given a string of words separated by spaces. The task is to find the first maximum length even word from the string. Eg: “You are… Read More »
Minimum length substring with exactly K distinct characters
Given a string S and a number K. The task is to find the minimum length substring having exactly K distinct characters. Note: The string… Read More »
Longest double string from a Palindrome
Given a palindrome String, the task is to find the maximum length of the double string and its length that can be obtained from the… Read More »
Minimum number of replacements to make the binary string alternating | Set 2
Given a binary string str, the task is to find the minimum number of characters in the string that have to be replaced in order… Read More »
Deletions of “01” or “10” in binary string to make it free from “01” or “10”
Given a binary string str, the task is to find the count of deletion of the sub-string “01” or “10” from the string so that… Read More »
Group consecutive characters of same type in a string
Given a string str consisting of upper case alphabets, numeric digits and arithmetic operators, the task is to group them into continuous sub-strings of same… Read More »
Maximum length of balanced string after swapping and removal of characters
Given a string str consisting of characters ‘(‘, ‘)’, ‘[‘, ‘]’, ‘{‘ and ‘}’ only. The task is to find the maximum length of the… Read More »
Total character pairs from two strings, with equal number of set bits in their ascii value
Given two strings s1 and s2. The task is to take one character from first string and one character from second string and check if… Read More »
Bitwise OR of N binary strings
Given an array arr[] of binary strings, the task is to calculate the bitwise OR of all of these strings and print the resultant string.… Read More »
Minimum cost to make a string free of a subsequence
Given a string str consisting of lowercase English alphabets and an array of positive integer arr[] both of same length. The task is to remove… Read More »
Minimum cost to make two strings same
Given four integers a, b, c, d and two strings S1 and S2 of equal length, which consist only of the characters ‘2’, ‘1’ and… Read More »
