[백준][Java] 14425번 문자열 집합 (문자열, HashMap)

[백준][Java] 14425번 문자열 집합 (문자열, HashMap)

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import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.util.HashMap; import java.util.Map; public class Main { private static BufferedReader br = new BufferedReader( new InputStreamReader( System . in )); private static BufferedWriter bw = new BufferedWriter( new OutputStreamWriter( System . out )); public static void main( String [] args) throws IOException{ String [] str = br.readLine(). split ( " " ); int N = stoi(str[ 0 ]); int M = stoi(str[ 1 ]); Map < String , Integer > hm = new HashMap < > (); for ( int i = 0 ; i < N; i + + ) hm.put(br.readLine(), 1 ); int res = 0 ; for ( int i = 0 ; i < M; i + + ) { String input = br.readLine(); res = (hm.getOrDefault(input, 0 ) = = 1 )? res + 1 : res; } System . out . println (res); // bw.write(""); // bw.flush(); // bw.close(); } private static int stoi( String input) { return Integer. parseInt (input); } } Colored by Color Scripter

from http://aig2029.tistory.com/299 by ccl(A) rewrite - 2021-09-23 18:27:31