Java Basics---What is an array (29)

What is an array

Q: Write code to save 4 students ' test scores.

A: Simple ah, define 4 variables Bai

Q: That "calculates the exam results of 400 students all year round", swollen

For:.......

array , you can help you to solve the problem properly!!

The array can be understood as a huge "box" in which multiple types of data can be stored sequentially, such as an array of type int scores store 4 students ' scores 650) this.width=650; "src=" http:/ Img.mukewang.com/537074a400017cd905290196.jpg "style=" Border:0px;clear:both; "/>

The elements in the array can be accessed by subscript, and the subscript starts at 0. For example, you can get the first element in the array by scores[0], scores[2] can take the third element 92!

Code:

public class HelloWorld {

public static void Main (string[] args) {

Define an array to save five students ' scores

Int[] scores = {78, 93, 97, 84, 63};

The second score in the output array

System.out.println ("The 2nd result in the array is:" + scores[1]);

}

}

Operation Result:

The 2nd score in the array is: 93

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Java Basics---What is an array (29)