개발하는 자몽

문제 문제 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { static boolean check(String str) { boolean word[] = new boolean[26]; int prev = 0; for (int i = 0; i < str.length(); i++) { int now = str.charAt(i); //앞선 문자와 i번째 문자가 같지 않은 경우 if (prev != now) { //해당 문자가 처음 나오는 경우 (false인 경우) if (!word[now - 'a']) { word[now - 'a'] = true; prev =..

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String str = br.readLine(); int len = str.length(); int cnt = 0; for (int i = 0; i < len; i++) { char ch = str.charAt(i); if (ch == 'c' && i < le..

문제 코드 import java.io.IOException; public class Main { public static void main(String[] args) throws IOException { //buffer와 switch-case를 사용한 방법 외 다른 방법 int cnt = 0; int input; while (true) { input = System.in.read(); if (input == '\n') break; if (input < 68) cnt += 3; else if (input < 71) cnt += 4; else if (input < 74) cnt += 5; else if (input < 77) cnt += 6; else if (input < 80) cnt += 7; else ..

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.StringTokenizer; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(br.readLine(), " "); int a = Integer.parseInt(new StringBuilder(st.nex..

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.StringTokenizer; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(br.readLine(), " "); System.out.println(st.countTokens()); } }

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String input = br.readLine(); int cnt[] = new int[26]; for (byte inputs : input.getBytes()) { if (inputs >= 97) { cnt[inputs - 'a']++; } else { c..

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringBuilder sb = new StringBuilder(); int t = Integer.parseInt(br.readLine()); for (int i = 0; i < t; i++) { String[] str = br.readLine().split..

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String S = br.readLine(); int alphabet[] = new int[26]; for(int i=0; i< alphabet.length; i++){ alphabet[i] = -1; } for(int i=0; i

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); int n = Integer.parseInt(br.readLine()); String numbers = br.readLine(); int sum = 0; for(int i=0; i

문제 코드 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); byte res = (byte) br.readLine().charAt(0); System.out.println(res); } }