We are given with the two strings let’s say str1 and str2 and the task is to find the count of common characters in two strings i.e. if str1[i] = str[j], then they will be considered as a pair and count will i
We are not at all bothered how many zeros are in between those two '1'. In fact, there can be '1's in between those two '1's picked up.Thus, number of substrings starting with '1' & ending with '1' , where count is the frequency of '1's in the string. ...
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828. Count Unique Characters of All Substrings of a Given String # 题目 # Let’s define a function countUniqueChars(s) that returns the number of unique characters on s, for example if s = "LEETCODE" then "L", "T","C","O","D" are the unique characters
Given a lengthn, count the number of strings of lengthnthat can be made using'a','b'and'c'with at-most one'b'and two'c's allowed. Example Input: n=1 Output: 3 Possible strings are: "a", "b", "c" Input: n=2 Output: 8 Possible strings are: "aa", "ab", ...
Learn how to calculate the count of N length strings that have S as a subsequence. Understand the concepts and techniques involved in this algorithm.
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Learn how to calculate the count of K-length substrings that contain at most X distinct vowels in this comprehensive tutorial.
Given a stringSand a wordC, return thecount of the occurrences of anagramsof the word in the text. Both string and word are in lowercase letter. Examples Input: S=fororfrdofr C=for Output: 3 Input: S=aabaabaa C=aaba Output: 4 ...