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我構建(很差)一個二維數組來保存學生姓名和成績。它確實提示我給學生的名字等於我想要的數量,但它不適用於成績。另外它說,我有一個索引超出界限,我不知道如何發生。我如何使用二維數組
private void studentArray() {
int rows = 0;
int col = 0;
Scanner input = new Scanner(System.in);
System.out.println("How many students do you have?");
rows = input.nextInt();
System.out.println("How many tests would you like to record?");
col = input.nextInt();
String [][] schoolArray = new String[rows][col];
for (int row = 0; row < rows; row++){
System.out.println("Please enter student name.");
schoolArray[row][0] = input.next();
for(int cols = 1; cols < col; cols++){
System.out.println("Please enter grades.");
schoolArray[cols][0] = input.next();
}//end of col for loop
}//end of row for loop
printSchool (schoolArray, rows, col);
}//end of studentArray
private void printSchool(String[][]schoolArray, int rows, int col){
for (int row = 0; row < schoolArray.length; row ++) {
System.out.print(schoolArray[rows][col + 1] + "\t");
}
}
更改'for(int cols = 1; cols
我們應該有等級數量決定列的數量,現在它要求我正確的時間量,但是當它應該顯示它給出一個索引超出範圍 –
@ donovanlinder多數民衆贊成那是因爲你正在使用'行'和「col」變量。哪些持有多少行和多少列的價值 – 3kings