限制数组，然后输入值[Java]

Question

基本上希望用户设置多个条形，然后填写设定量的高度。希望没有太多的代码丢失。

System.out.println("Enter number of bars (min 1/max 6:");               
int[] barHeights = new int[7];
for (int i =0;i<barHeights.length;i++){
    System.out.println("Enter Height of bar(min 1/max 7:");
    input.nextInt();
}

Answer 1

//Get number of bars
int numberOfBars = input.nextInt();
if(numberOfBars <= 0 )
{
    System.out.println("Invaild entry");//Thanks @Task for pointing it out
    return; // Replace with suitable return
}
//Create an array
int[] bars = new int[numberOfBars];
//Get the values
for (int i =0;i<bars.length;i++)
{
   bars[i] = input.nextInt();
}

Answer 2

您应先获取数组大小，然后填写

System.out.println("Enter number of bars (min 1/max 6:");  
int size = input.nextInt();             
int[] barHeights = new int[size ];
for (int i =0;i<barHeights.length;i++){
    System.out.println("Enter Height of bar(min 1/max 7:");
    barHeights [i]=input.nextInt();
}