🚀[feat] 자바 - 배열복사

Author: S2uJeong

src/main/java/practiceJAVA/CopyOfArray.java

@@ -0,0 +1,55 @@
+package practiceJAVA;
+
+public class CopyOfArray {
+    public static void main(String[] args) {
+
+        int [] arrInt = {1,2,3,4,5};
+        String [] arrStr = {"최수정","차수림","윤원빈","허진주"};
+
+        int [] arrIntCopired = new int[5]; // 복사 대상보다 같거나 크게 공간 설정
+        String [] arrStrCopierd = new String[5];
+
+        /**
+         * basic : for문
+         */
+        for(int i=0; i<arrInt.length; i++){
+             arrIntCopired[i] = arrInt[i];
+        }
+
+        System.out.print("basic copy result: ");
+        printInt(arrIntCopired);
+
+        /**
+         * arraycopy 메서드 활용
+         */
+        System.arraycopy(arrStr, 0, arrStrCopierd, 0, arrStr.length);
+
+        System.out.print("arraycopy method result: ");
+        printStr(arrStrCopierd);
+
+        /**
+         * for each문 활용
+         */
+        int sum = 0;
+        for (int a : arrInt) {
+           sum += a;
+        }
+        System.out.printf("for-each문 sum 구하기: %d \n", sum);
+
+    }
+
+    public static void printInt(int[] arr) {
+        for(int i=0; i<arr.length; i++) {
+            System.out.print(arr[i] + ", ");
+        }
+        System.out.println();
+    }
+
+    public static void printStr(String [] arr) {
+        for(int i=0; i<arr.length; i++) {
+            System.out.print(arr[i] + ", ");
+        }
+        System.out.println();
+    }
+
+}