feat : 프로그래머스 정렬

Author: cyeji

src/main/java/sgyj/programmers/yeji/sort/Solution42746.java

@@ -0,0 +1,16 @@
+package sgyj.programmers.yeji.sort;
+
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+public class Solution42746 {
+    public static String solution(int[] numbers) {
+        String answer =  Arrays.stream( numbers ).mapToObj( Integer::toString ).sorted( ( o1, o2 ) -> ( o2 + o1).compareTo( o1 + o2 ) ).collect( Collectors.joining());
+        return answer.startsWith("0") ? String.valueOf(Integer.parseInt(answer)) : answer;
+    }
+
+    public static void main ( String[] args ) {
+        int[] numbers = {0,0,0,0,0};
+        System.out.println(solution( numbers ));
+    }
+}

src/main/java/sgyj/programmers/yeji/sort/Solution42748.java

@@ -0,0 +1,33 @@
+package sgyj.programmers.yeji.sort;
+
+import java.util.Arrays;
+
+public class Solution42748 {
+
+    public static int[] solution(int[] array, int[][] commands) {
+        int[] answer = new int[commands.length];
+
+        for(int c=0; c<commands.length; c++){
+            int start = commands[c][0]-1;
+            int end = commands[c][1];
+            int target = commands[c][2]-1;
+
+            int[] arr = Arrays.copyOfRange( array, start, end);
+            Arrays.sort(arr);
+            answer[c] = arr[target];
+        }
+
+        return answer;
+    }
+
+    public static void main ( String[] args ) {
+        int[] array = {1, 5, 2, 6, 3, 7, 4};
+        int[][] commands = {
+            {2,5,3},{4,4,1},{1,7,3}
+        };
+
+        for(int s : solution(array,commands)){
+            System.out.print(s +" ");
+        }
+    }
+}