HR자바 Java Substring Comparisons

개요

HR자바 Java Substring Comparisons

• https://www.hackerrank.com/challenges/java-string-compare/problem

해커랭크 Java

#	문제	비고
HR자바 Strings e
14	HR자바 Java Strings Introduction
15	HR자바 Java Substring
16	HR자바 Java Substring Comparisons
17	HR자바 Java String Reverse
18	HR자바 Java Anagrams
19	HR자바 Java String Tokens
20	HR자바 Pattern Syntax Checker
21	HR자바 Java Regex
22	HR자바 Java Regex 2 - Duplicate Words
23	HR자바 Valid Username Regular Expression
24	HR자바 Tag Content Extractor

---

import java.util.Scanner;

public class Solution {

    public static String getSmallestAndLargest(String s, int k) {
        String smallest = s.substring(0,k);
        String largest = s.substring(0,k);
        
        // Complete the function
        // 'smallest' must be the lexicographically smallest substring of length 'k'
        // 'largest' must be the lexicographically largest substring of length 'k'
        String ss;
        for(int i=1; i<s.length()-k+1; i++) {
            ss = s.substring(i,i+k);
            if( ss.compareTo(smallest)<0 ) smallest=ss;
            if( ss.compareTo(largest)>0 ) largest=ss;
        }
        return smallest + "\n" + largest;
    }

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String s = scan.next();
        int k = scan.nextInt();
        scan.close();
      
        System.out.println(getSmallestAndLargest(s, k));
    }
}