[英]Java: Print format with two arrays in one line and different length
我想用我给出的两个数组的内容将漂亮的表打印到控制台。 这两个数组都是ArrayList,并且长度可能不同。 此外,在两个ArrayList的内部都是长度为3的数组。
我现在面临的问题是我想将每个ArrayLists的两个值都放在一行中。 例如:
EAN STOCK CAPACITY | EAN STOCK CAPACITY
10 3 3 | 10 2 4
11 1 6 | 11 4 5
12 5 7 | 12 6 9
13 7 9 | 13 3 5
14 4 7 | 14 0 4
15 0 7 |
16 0 2 |
在左侧,您可以看到一个包含数组的ArrayList,在右侧是另一个包含数组的ArrayList。
但是,我不知道如何在一行中打印两个数组的值时遍历两个数组。 尤其是当两个ArrayList的大小不相同时。
到目前为止,这是我的代码...我不知道如何实现
private void printDrinks(ArrayList<int[]> storageRoom, ArrayList<int[]> saleRoom){
System.out.format("%10s %10s %10s %40s %10s %10s %10s", "EAN", "STOCK", "CAPACITY", "|", "EAN", "STOCK", "CAPACITY"); System.out.println();
String row = "";
for (int i = 0; i < storageRoom.size(); i++){
row += String.format("%10s %10s %10s %10s", storageRoom.get(i)[0], storageRoom.get(i)[1], storageRoom.get(i)[2]);
}
for (int i = 0; i < saleRoom.size(); i++){
row += String.format("%10s %10s %10s %10s", saleRoom.get(i)[0], saleRoom.get(i)[1], saleRoom.get(i)[2]);
}
System.out.println(row);
}
你们能给我提示还是帮我吗? 亲切的问候,谢谢!
首先找到要打印的总行数,然后循环多次。 如果当前行超出列表大小,则打印空格(左)或不打印任何内容(右)。
private static void printDrinks(List<int[]> storageRoom, List<int[]> saleRoom){
int rows = Math.max(storageRoom.size(), saleRoom.size());
System.out.println("EAN STOCK CAPACITY | EAN STOCK CAPACITY");
for (int i = 0; i < rows; i++) {
if (i < storageRoom.size())
System.out.printf("%3d %7d %10d |", storageRoom.get(i)[0], storageRoom.get(i)[1], storageRoom.get(i)[2]);
else
System.out.printf("%25s", "|");
if (i < saleRoom.size())
System.out.printf(" %3d %7d %10d", saleRoom.get(i)[0], saleRoom.get(i)[1], saleRoom.get(i)[2]);
System.out.println();
}
}
测验
printDrinks(Arrays.asList(new int[][] {{10,3,3},{11,1,6},{12,5,7},{13,7,9},{14,4,7},{15,0,7},{16,0,2}}),
Arrays.asList(new int[][] {{10,2,4},{11,4,5},{12,6,9},{13,3,5},{14,0,4}}));
printDrinks(Arrays.asList(new int[][] {{10,2,4},{11,4,5},{12,6,9},{13,3,5},{14,0,4}}),
Arrays.asList(new int[][] {{10,3,3},{11,1,6},{12,5,7},{13,7,9},{14,4,7},{15,0,7},{16,0,2}}));
产出
EAN STOCK CAPACITY | EAN STOCK CAPACITY
10 3 3 | 10 2 4
11 1 6 | 11 4 5
12 5 7 | 12 6 9
13 7 9 | 13 3 5
14 4 7 | 14 0 4
15 0 7 |
16 0 2 |
EAN STOCK CAPACITY | EAN STOCK CAPACITY
10 2 4 | 10 3 3
11 4 5 | 11 1 6
12 6 9 | 12 5 7
13 3 5 | 13 7 9
14 0 4 | 14 4 7
| 15 0 7
| 16 0 2
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