Arrays類講解

package array;
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import java.util.Arrays;
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public class ArrayDemon07 {
  public static void main(String[] args) {
    int[] a={1,3,2,5,4,10000};
​
    //System.out.println(a);//[I@1b6d3586
    //列印陣列元素
    //System.out.println(Arrays.toString(a)); //[1, 3, 2, 5, 4, 10000]
    //printArray(a);
​
    Arrays.sort(a);// 對陣列進行排序:升序
    System.out.println(Arrays.toString(a));// [1, 2, 3, 4, 5, 10000]
​
    //陣列填充
    Arrays.fill(a,0);
    System.out.println(Arrays.toString(a));// [0, 0, 0, 0, 0, 0]
​
    Arrays.fill(a,2,4,10000);//第二到第四個元素之間填充
    System.out.println(Arrays.toString(a));//[0, 0, 10000, 10000, 0, 0]
​
​
   }
​
​
​
// 重複造輪子  [1,3,2,5,4,10000]
  public static void printArray(int array[]){
    for (int i = 0; i <array.length ; i++) {
      if (i==0){
        System.out.print("[");
       }
      if (i==array.length-1){
        System.out.print(array[i]+"]");
       }else{
        System.out.print(array[i]+", ");
       }
​
​
     }
   }
}
​