在iOS游戏开发中，比如2048游戏。有时会需要存储N×N数组的数据模型（如3×3，4×4等）。这里我们演示了三种实现方式，分别是：一维数组、仿二维数组、自定义二维数组（即矩阵结构）。
功能是根据传入维度初始化数组，同时提供设置值和打印输出所有值的功能，判断数组是否已满（全不为0），以及目前空位的坐标集。 1，使用一维数组实现
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | import Foundation class GameModel { var dimension: Int = 0 var tiles: Array < Int > init (dimension: Int ) { self .dimension = dimension self .tiles = Array < Int >(count: self .dimension* self .dimension, repeatedValue:0) } //找出空位置 func emptyPositions()-> [ Int ] { var emptytiles = Array < Int >() //var index:Int for i in 0..<(dimension*dimension) { if (tiles[i] == 0) { emptytiles.append(i) } } return emptytiles } //位置是否已满 func isFull()-> Bool { if (emptyPositions().count == 0) { return true } return false } //输出当前数据模型 func printTiles() { println (tiles) println ( "输出数据模型数据" ) var count = tiles.count for var i=0; i<count; i++ { if (i+1) % Int (dimension) == 0 { println (tiles[i]) } else { print ( "\(tiles[i])\t" ) } } println ( "" ) } //如果返回 false ,表示该位置 已经有值 func setPosition(row: Int , col: Int , value: Int ) -> Bool { assert(row >= 0 && row < dimension) assert(col >= 0 && col < dimension) //3行4列，即 row=2 , col=3 index=2*4+3 = 11 //4行4列，即 3*4+3 = 15 var index = self .dimension * row + col var val = tiles[index] if (val > 0) { println ( "该位置(\(row), \(col))已经有值了" ) return false } tiles[index] = value return true } } |
2，使用二维数组实现
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | import Foundation class GameModelBA { var dimension: Int = 0 var tiles: Array < Array < Int >> //由外部来传入维度值 init (dimension: Int ) { self .dimension = dimension self .tiles = Array (count: self .dimension, repeatedValue: Array (count: self .dimension, repeatedValue:0)) } //找出空位置 func emptyPositions()-> [ Int ] { var emptytiles = Array < Int >() //var index:Int for row in 0..< self .dimension { for col in 0..< self .dimension { if (tiles[row][col] == 0) { emptytiles.append(tiles[row][col]) } } } return emptytiles } //如果返回 false ,表示该位置 已经有值 func setPosition(row: Int , col: Int , value: Int ) -> Bool { assert(row >= 0 && row < dimension) assert(col >= 0 && col < dimension) var val = tiles[row][col] if (val > 0) { println ( "该位置(\(row), \(col))已经有值了" ) return false } printTiles() //tiles[row][col] = value var rdata = Array (count: self .dimension, repeatedValue:0) for i in 0..< self .dimension { rdata[i] = tiles[row][i] } rdata[col] = value tiles[row] = rdata return true } //位置是否已满 func isFull()-> Bool { if (emptyPositions().count == 0) { return true } return false } //输出当前数据模型 func printTiles() { println (tiles) println ( "输出数据模型数据" ) var count = tiles.count for row in 0..< self .dimension { for col in 0..< self .dimension { print ( "\(tiles[row][col])\t" ) } println ( "" ) } println ( "" ) } } |
3，使用自定义二维数组（即矩阵结构）
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | import Foundation //自定义矩阵数据结构 struct Matrix { let rows: Int , columns: Int var grid: [ Int ] init (rows: Int , columns: Int ) { self .rows = rows self .columns = columns grid = Array (count: rows * columns, repeatedValue: 0) } func indexIsValidForRow(row: Int , column: Int ) -> Bool { return row >= 0 && row < rows && column >= 0 && column < columns } subscript(row: Int , column: Int ) -> Int { get { assert(indexIsValidForRow(row, column: column), "超出范围" ) return grid[(row * columns) + column] } set { assert(indexIsValidForRow(row, column: column), "超出范围" ) grid[(row * columns) + column] = newValue } } } class GameModelMatrix { var dimension: Int = 0 var tiles: Matrix //由外部来传入维度值 init (dimension: Int ) { self .dimension = dimension self .tiles = Matrix (rows: self .dimension, columns: self .dimension) } //找出空位置 func emptyPositions()-> [ Int ] { var emptytiles = Array < Int >() //var index:Int for row in 0..< self .dimension { for col in 0..< self .dimension { var val = tiles[row,col] if (val == 0) { emptytiles.append(tiles[row, col]) } } } return emptytiles } //如果返回 false ,表示该位置已经有值 func setPosition(row: Int , col: Int , value: Int ) -> Bool { assert(row >= 0 && row < dimension) assert(col >= 0 && col < dimension) var val = tiles[row,col] if (val > 0) { println ( "该位置(\(row), \(col))已经有值了" ) return false } printTiles() tiles[row, col] = value printTiles() return true } //位置是否已满 func isFull()-> Bool { if (emptyPositions().count == 0) { return true } return false } //输出当前数据模型 func printTiles() { println (tiles) println ( "输出数据模型数据" ) for row in 0..< self .dimension { for col in 0..< self .dimension { print ( "\(tiles[row, col])\t" ) } println ( "" ) } println ( "" ) } } |