二维数组辅助函数

This commit is contained in:
kercylan98 2023-06-09 16:04:13 +08:00
parent 60afa3b391
commit 7bafaed072
2 changed files with 53 additions and 0 deletions

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@ -32,3 +32,43 @@ func GetAdjacentPositions[T any](matrix [][]T, x, y int) (result [][2]int) {
}
return
}
// GetAdjacentPositionsWithContinuousPosition 获取一个连续位置的矩阵中,特定位置相邻的最多四个方向的位置
func GetAdjacentPositionsWithContinuousPosition[T any](matrix []T, width, pos int) (result []int) {
size := len(matrix)
if up := pos - width; up >= 0 {
result = append(result, up)
}
if down := pos + width; down < size {
result = append(result, size)
}
if left := pos - 1; pos >= 0 {
result = append(result, left)
}
if right := pos + 1; right < size {
result = append(result, right)
}
return
}
// PositionToInt 将坐标转换为二维数组的顺序位置
func PositionToInt(width, x, y int) int {
return y*width + x
}
// PositionIntToXY 通过宽度将一个二维数组的顺序位置转换为xy坐标
func PositionIntToXY(width, pos int) (x, y int) {
x = pos % width
y = pos / width
return x, y
}
// PositionIntGetX 通过宽度将一个二维数组的顺序位置转换为X坐标
func PositionIntGetX(width, pos int) int {
return pos % width
}
// PositionIntGetY 通过宽度将一个二维数组的顺序位置转换为Y坐标
func PositionIntGetY(width, pos int) int {
return pos / width
}

13
utils/g2d/g2d_test.go Normal file
View File

@ -0,0 +1,13 @@
package g2d
import (
"fmt"
"testing"
)
func TestPositionIntToXY(t *testing.T) {
pos := PositionToInt(9, 7, 8)
fmt.Println(pos)
fmt.Println(PositionIntToXY(9, pos))
}