「陣列(Array)」,按序排列的同類資料元素的集合。
1.索引值是從0 開始計數
2.索引值不可超出陣列的範圍
3.取陣列最後一個值=陣列長度-1
分別運用四種不同的陣列宣告方式, 完成參考執行畫面.
- public class Ch34
- {
- public static void main(String args[])
- {
- String a[]={"春","夏","秋","冬"};
-
- String b[]={"甲","乙","丙","丁"};
- System.out.print("陣列a: ");
- for(int i=0; i<4; i++)
- System.out.print(a[i]+" ");
- System.out.println();
- System.out.print("陣列b: ");
- for(int i=0; i<4; i++)
- System.out.print(b[i]+" ");
- System.out.println();
-
-
- int c[]={1,2,3,4};
-
- //string d[4]; -> c++宣告長度為4的空陣列
- String d[]=new String[4]; //宣告長度為4的空陣列
- d[0]="A";
- d[1]="B";
- d[2]="C";
- d[3]="D";
- //foreach
- //for(陣列型態 變數:陣列(來源))
- System.out.print("陣列c: ");
- for(int i:c)
- System.out.print(i+" ");
- System.out.println();
-
- System.out.print("陣列d: ");
- for(String sa:d)
- System.out.print(sa+" ");
- System.out.println();
- }
- }
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