java - 移动二维数组中的某个元素

Question

给定一个二维数组。如果 [i][0] == name，如何将它移动到数组的最后一个元素？

String[][] array2d = [ [continents, name, Asia, Europe, Africa, Australia, South America, North America, Antartica],
 [profession, Teacher, Doctor, Lawyer],
 [brand, Apple, Samsung],
[name, Lisa, Peter, Sam, Jake],
[profession, Engineer, Professor, Dentist, Driver],
 [sex, value, Male, Female],
 [exp, value, 1, 2, 3, 4, 6]]

我想要的输出是

[ [continents, name, Asia, Europe, Africa, Australia, South America, North America, Antartica],
 [profession, Teacher, Doctor, Lawyer],
 [brand, Apple, Samsung],
 [profession, Engineer, Professor, Dentist, Driver],
 [sex, value, Male, Female],
 [exp, value, 1, 2, 3, 4, 6],
[name, Lisa, Peter, Sam, Jake]
]

下面是代码

 String[][] newArray =new String[array2d.length][];

     for (int i = 0; i < newArray.length; ++i) {
         newArray[i] = new String[array2d[i].length];
         for (int j = 0; j < newArray[i].length; ++j) {
             if (array2d[i][0] != "name") {
                 newArray[i][j] = array2d[i][j];
             }
         }
      }

然而，输出是

[[continents, name, Asia, Europe, Africa, Australia, South America, North America, Antartica],
 [profession, Teacher, Doctor, Lawyer],
 [brand, Apple, Samsung],
 [null, null, null, null, null],
 [profession, Engineer, Professor, Dentist, Driver],
 [sex, value, Male, Female],
 [exp, value, 1, 2, 3, 4, 6]]

谢谢!

Answer 1

首先备份最后一个元素(它是一个一维数组)，将你的数组最后一个元素作为 var 深度复制到一个临时变量)然后将你选择的(它是一个一维数组)元素复制到数组的最后一个元素。最后将备份的最后一个元素复制到数组的所选元素中。这是伪代码。

if(array[i][0] == name){  

   var = deepCopy(array[last]
   array[last] = deepCopy(array[i])
   array[i] = var

}

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