根据 Java 中的列对二维字符串数组进行排序

Question

我有一个包含 3 列（id、名称、城市）的字符串数组，我想按照 name[ 的升序对数组进行排序=20=] 列。请帮我解决这个问题。

String[][] array1 = {{"54","jim","delhi"}, {"67","dwight","bangalore"}, {"39","pam","pune"}};

预期输出应为：

array1 = {{"67","dwight","bangalore"}, {"54","jim","delhi"}, {"39","pam","pune"}};

Answer 1

使用 stream 和 Comparator 然后您可以根据需要对该数组进行排序：

String[][] array1 = {{"54", "jim", "delhi"},
        {"67", "dwight", "bangalore"},
        {"39", "pam", "pune"}};


List<String[]> collect1 = Arrays.stream(array1).sorted(Comparator.comparing(a -> a[1])).collect(Collectors.toList());
String[][] sortedArray = new String[array1.length][3];
for (int i = 0; i < collect1.size(); i++) {
    sortedArray[i] = collect1.get(i);
}
System.out.println(Arrays.deepToString(sortedArray));

根据 Java 中的列对二维字符串数组进行排序

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