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[英]In Java, how do I take the values of a 2D array and store them in another 2D array with different column and row size?
[英]How to store subarrays of different size into a single 2d array
我试图将不同大小的一维数组存储到二维数组中,然后根据子数组的总和对二维数组进行排序。
尝试这个。
int[][] arrays = {{0, 1, 2, 3}, {4}, {5, 6}, {7},};
int[][] sorted = Arrays.stream(arrays)
.map(a -> new Object() {
int sum = IntStream.of(a).sum();
int[] array = a;
})
.sorted(Comparator.comparing(obj -> obj.sum))
.map(obj -> obj.array)
.toArray(int[][]::new);
System.out.println(Arrays.deepToString(sorted));
输出
[[4], [0, 1, 2, 3], [7], [5, 6]]
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