day05-数组的操作_数组的遍历

2026-07-18 16:29:18 +08:00
parent 14359ab2da
commit a7f8dcf97a
1 changed files with 26 additions and 0 deletions
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+package com.inmind.array01;
+/**
+ * 数组的遍历
+ * 遍历：将数组中的每个数据，一一展示,(for循环！！！)
+ */
+public class Demo06 {
+    public static void main(String[] args) {
+        int[] arr = {1,2,3,4,5,6,7,8,9,10};//5000个数字
+        //获取数组中所有的元素
+        /*System.out.println(arr[0]);
+        System.out.println(arr[1]);
+        System.out.println(arr[2]);
+        System.out.println(arr[3]);
+        System.out.println(arr[4]);*/
+        //0~4,4:arr.length-1
+        //正向遍历
+        for (int i = 0; i < arr.length; i++) {
+            System.out.println(arr[i]);
+        }
+        //反向遍历
+        for (int i = arr.length - 1; i >= 0; i--) {
+            System.out.println(arr[i]);
+        }
+        System.out.println("程序结束");
+    }
+}