A Level 計算機科學程式設計指南/陣列

宣告陣列

在虛擬碼中，所有陣列都有可宣告的上限和下限。

在 VB.NET 中，所有陣列都有可宣告的上限，但下限始終為 0。

一維陣列

語言

一般用法

示例用法

虛擬碼

DECLARE <Identifier> : ARRAY[<Lower Bound>:<Upper Bound>] OF <Data Type>

DECLARE NameList : ARRAY[1:5] OF STRING
DECLARE YearlyRainfall : ARRAY[1900:2100] OF REAL
DECLARE AgeList : ARRAY[0:40] OF INTEGER

VB.NET

Dim <Identifier>(<Upper Bound>) As <Data Type>

Dim NameList(4) As String
Dim YearlyRainfall(200) As Double
Dim AgeList(40) As Integer

Python

<Identifier> = []

NameList = []
YearlyRainfall = []
AgeList = []

二維陣列

語言

一般用法

示例用法

虛擬碼

DECLARE <Identifier> : ARRAY[<Lower Bound>:<Upper Bound>, <Lower Bound>:<Upper Bound>] OF <Data Type>

DECLARE GameArea : ARRAY[1:32, 0:16] OF STRING
DECLARE SudokuGrid : ARRAY[1:9, 1:9] OF INTEGER
DECLARE PopulationDensity : ARRAY[1:50, 20:50] OF REAL

VB.NET

Dim <Identifier>(<Upper Bound>, <Upper Bound>) As <Data Type>

Dim GameArea(31, 16) As String
Dim SudokuGrid(8) As Integer
Dim PopulationDensity(49,30) As Double

Python

<Identifier1> = []
<Identifier2> = []
<Identifier1>.append(<Identifier2>)

Game = []
GameArea = []
GameArea.append(Game)

SudokuX = []
SudokuGrid = []
SudokuGrid.append(SudokuX)

Longitude = []
PopulationDensity = []
PopulationDensity.append(Longitude)

使用陣列

一維陣列

語言

一般用法

示例用法

虛擬碼

<Identifier>[<Index>] ← <Value>

NameList[1] ← "Stephen"
YearlyRainfall[1985] ← 13.73
AgeList[39] ← 17

VB.NET

<Identifier>(<Index>) = <Value>

NameList(0) = "Stephen"
YearlyRainfall(85) = 13.73
AgeList(38) = 17

Python

<Identifier>.append(<Value>)

NameList.append("Stephen")
YearlyRainfall.append(13.73)
AgeList.append(17)

二維陣列

語言

一般用法

示例用法

虛擬碼

<Identifier>[<Index>,<Index>] ← <Value>

GameArea[16, 5] ← "Fire"
SudokuGrid[9, 3] ← 7
PopulationDensity[14, 32] ← 242.023

VB.NET

<Identifier>(<Index>,<Index>) = <Value>

GameArea(15, 5) = "Fire"
SudokuGrid(8, 2) = 7
PopulationDensity(13, 12) = 242.023

Python

<Identifier1> = []
<Identifier2> = []
<Identifier1>.append(<Identifier2>)

Game.append("Fire")
GameArea.append(Game)

SudokoX.append(7)
SudokuGrid.append(SudokuX)

Longitude.append(242.023)
PopulationDensity.append(Longitude)