是否可以根据计数在循环内声明多个变量？

Question

假设我想根据计数在循环内声明一定数量的变量。

private static void declaration(int amount) 
{ 
    for (int i = 0; i <= amount; i++) 
    { 
     /*Code that declares variables. 
     * 
     *When i == 0, it will declare int num0 with a value of 0. 
     *When i == 1, it will declare int num1 with a value of 0, etc. 
     */ 
    } 
} 

这是可以做到的Java内部？

Answer 1

不是这样，你需要某种数据结构，例如，列表，地图等。

例如，如果他们需要通过名称识别

Map<String, Integer> variables = new HashMap<String, Integer>(); 
for (int i = 0; i <= amount; i++) { 
    variables.put("num" + i, 0); 
} 
// latter get value 
System.out.println(variables.get("num3")); 

例如，如果只是索引事项

int[] state = new int[amount]; 
for (int i = 0; i <= amount; i++) { 
    state[i] = 0; // <== all elements are already zero, but just to show you idea 
}