JAVA-array definition

JAVA-array definition

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Array definition

An array is an ordered collection of data of the same type.

The array describes several data of the same type, arranged and combined in a certain order.

Among them, each data is called an array element, and each array element can be accessed through a subscript.

public class ArrayDemo1 {
    
    
    public static void main(String[] args) {
    
    
        int[] nums;//声明一个数组

        nums = new int[10];//创建一个数组

        //给数组元素中赋值
        nums[0]=1;
        nums[1]=2;
        nums[2]=3;
        nums[3]=4;
        nums[4]=5;
        nums[5]=6;
        nums[6]=7;
        nums[7]=8;
        nums[8]=9;
        nums[9]=10;

        System.out.println(nums[9]);
        int sum=0;
        for (int i = 0; i <nums.length ; i++) {
    
    
            sum=nums[i]+sum;
        }System.out.println("总和为："+sum);
    }
}