二维数组不同的列大小

Question

Lets say I want to create a two dimensional array that looks like

/* [
     [2],
    [3,4],
   [6,5,7],
  [4,1,8,3]
] */

How do can I create it using go?

Typically if I have a 2d array with equal size columns like

 /*   [4,1,8,1],
      [2,1,3,3],
      [7,1,4,3]
 */

matrix := make([][]int, 4)
for i := range matrix {
    matrix[i] = make([]int, 3)
}

Answer 1

You can create slices of different sizes at matrix[i]:

matrix := make([][]int, 4)
for i := range matrix {
    matrix[i] = make([]int, i+1)
}