[241122] BOJ 1283 단축키 지정

sjhlko/week44/BOJ_1283/ShortCut.java

@@ -0,0 +1,73 @@
+package sjhlko.week44.BOJ_1283;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.HashSet;
+import java.util.Set;
+
+public class ShortCut {
+    //https://www.acmicpc.net/problem/1283
+    //단축키 지정
+    static Set<Character> keys = new HashSet<>();
+
+    static char changeCase(char c) {
+        if (c >= 'a' && c <= 'z') return (char) (c - 32);
+        return (char) (c + 32);
+    }
+
+    static String solution(String[] options) {
+        boolean flag = false;
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < options.length; i++) {
+            String option = options[i];
+            if (!flag && !keys.contains(option.charAt(0))) {
+                keys.add(option.charAt(0));
+                keys.add(changeCase(option.charAt(0)));
+                sb.append('[')
+                  .append(option.charAt(0))
+                  .append(']');
+                sb.append(option.substring(1));
+                sb.append(" ");
+                flag = true;
+                continue;
+            }
+            sb.append(option)
+              .append(" ");
+        }
+        if(flag) return sb.toString();
+
+
+        sb = new StringBuilder();
+        flag = false;
+        for (int i = 0; i < options.length; i++) {
+            for (int j = 0; j < options[i].length(); j++) {
+                if (!flag && !keys.contains(options[i].charAt(j))) {
+                    keys.add(options[i].charAt(j));
+                    keys.add(changeCase(options[i].charAt(j)));
+                    sb.append('[')
+                      .append(options[i].charAt(j))
+                      .append(']');
+                    flag = true;
+                    continue;
+                }
+                sb.append(options[i].charAt(j));
+            }
+            sb.append(" ");
+        }
+        return sb.toString();
+    }
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
+        int N = Integer.parseInt(bf.readLine());
+        StringBuilder sb = new StringBuilder();
+        while (N-- > 0) {
+            String[] options = bf.readLine()
+                                 .split(" ");
+            sb.append(solution(options))
+              .append("\n");
+        }
+        System.out.println(sb);
+    }
+}