K-th lexicographically smallest unique substring of a given string.
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Example 1: Input: s = "bcabc" Output: "abc" Example 2: Input: s = "cbacdcbc" Output: "acdb" Constraints: 1 str: g = faultdict (list) for a,b in zip (A,B): g. Given a string s, remove duplicate letters so that every letter appears once and only once.You must make sure your result is the smallest in lexicographical order among all possible results.Explanation To begin solving this problem, we need to make. Answer (1 of 7): Lalit Kundu's solution is good, but we can actually do a little bit better asymptotically.Output : nn Possible subsequence where each character exists at least 2 times are: From the above subsequences, "nn" is the lexicographically. The task is to find lexicographically largest subsequence of S, say T, such that every character in T must occur at least K times. The longest increasing subsequence of an array of numbers is the longest possible subsequence that can be created from its elements such that all elements are in increasing order. A subsequence of an array is an ordered subset of the array's elements having the same sequential ordering as the original array. So if the input is like A = "parker", B = "morris" and S = "parser", then the output will be "makkek". Return all words that can be formed in this manner, in lexicographical order. Here we have to find the lexicographically smallest equivalent string of S by using the equivalency information from A and B. If they are identical and one string is shorter, then it comes first. To determine which comes first in lexicographic order, compare the first letters of both strings to see which is smaller, and if they match, compare the second letters, and so on. You dont need to read input or print anything. Hence, lexicographically smallest string after removal of 2 characters is "cd". Input: S = "code", k = 4 Output: "cd" Explanation: As the length of the string = 4, which is 2 to the power 2, hence k = 2. Hi hat pack reddit After removing 4 characters from the given string, the lexicographically smallest string is "and".
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