Java Programming - Chapter 10 (in Thai)

7/25/2019 Java Programming - Chapter 10 (in Thai)

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Computer Programming using JavaTwo Dimensional Arrays - 10

CHAPTER

1

[][] = {{, . . . , },...};

(Two Dimensional Arrays)

1.

1. Initialized ListInitialized List

i nt num[ ] [ ] = {{1, 0}, {2, 1}, {2, 4}};

1 [] InitializedList(10 )1) a2 x 30 (2 )

2) b5 x 21 (2 )

3) s3 x 1"Java"(2 )

4) t1 x 3"Java"(2 )

5) em0 x 0 (2 )

[ ] [ ]

num3 x 2 () 3 () 2

3 3 2 2

1 0

2 1

2 4


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Computer Programming using Java 10 - Two Dimensional Arrays

=new [][];

[] =new [];

2 [] - (6 )1) int m[][] = {{1,2,3,4},{2,3,4,5},{3,4,5,6},{4,5,6,7}};(2 )

2) int n[][] = {{1},{2,3},{3,4,5},{4,5,6,7}};(2 )

3)

int p[][] = {{1,2,3},{2,3},{3,4,5,6},{4},{5,6}};(2 )

2. newnew 1)

i nt a[ ] [ ] ;

2) (1)

a = new i nt [ 3] [ ] ;

(2)

( )

1 (0) 3

2 (1) 2 3 (2) 4

1 m[][] 2 n[][] 3 p[][]

[][];

[ ]

[ ] 2 a

[ ] [ ]

[ ] ()

a

[ 0]

[ 1]

[ 2]

a3 ()

a[0] = new i nt [ 3] ; a[1] = new i nt [ 2] ;

a[2] = new i nt [ 4] ;

a

[ 0]

[ 1]

[ 2]

0 0 0

[ 0]

0 0

0 0 0 0

[ 1] [ 2] [ 3]


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3)

1 2

a[0][0] a[0][1] a[0][2]

a[1][0] a[1][1]

a[2][0] a[2][1] a[2][2] a[2][3]

4) 1 2 (2 )

5)

3 (1)

4 (2) () 0

(/ ) 14

6) 4

a[0][0] a[0][1] a[0][2] a[0][3]

a[1][0] a[1][1] a[1][2] a[1][3]

a[2][0] a[2][1] a[2][2] a[2][3]

3 [] (12 )1)

matrix5 x 8 (2 )

2) chess(2 )

[ ] [ ] = new [ ] [ ] ;

[ ] [ ] = new [ ] [ ] ;

i nt a[ ] [ ] = new i nt [ 3] [ 4] ;i nt [ ] [ ] a = new i nt [ 3] [ 4] ; [ ] [ ]


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3) tranMatrix-9 x 4 (2 )

4) data2110101 300 (2 )

5) 8 n

3 (2

)

6) 4 nx2+ 1 (2 )

4 [] getTable() 1 .. 31 .. 12 (12 )


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= [ ] [ ] ;

[ ] [ ] = ;

3. . l engt h

1)

(1)

2) (2)

4. 1)

i nt n = num[ 0] [ 0] ; (nnum0 0)

2)

num[ 0] [ 0] = 13; (num0 0 13)

3)

() f or f or whi l e whi l e(0 0) -(length - 1 length - 1)

1

23456

.length

[].length

i nt [ ] [ ] a = new i nt [ 3] [ 4] ;

Syst em. out . pr i nt l n( a. l engt h) ; 3Syst em. out . pr i nt l n( a[ 0] . l engt h) ; 4Syst em. out . pr i nt l n( a[ 1] . l engt h) ; 4Syst em. out . pr i nt l n( a[ 2] . l engt h) ; 4Syst em. out . pr i nt l n( a[ 3] . l engt h) ; Error

a

23 a

3

[0] [1] [2] [3]

[ 0] 0 0 0 0

[ 1] 0 0 0 0

[ 2] 0 0 0 0

12

3456

i nt a[ ] [ ] = new i nt [ 5] [ 8] ;f or ( i nt i = 0; i < a.length; i ++) {

f or ( i nt j = 0; j < a[i].length; j ++) {a[i][j] = 13;

}}

f o r i

()

f o r j

i


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5 [] (16 )1)x num50 51 (2 )

2)c code60 10 (2 )

3)var1 bank1 2 (2 )

4)var2 bank2 (2 )

5)5 7 codex(2 )

6)9 1 sNames1(2 )

7)3 2 sNames2(2 )

8)ay(2 )

6 [] setArray() 3 4 12 (3 x 4) (12 )


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public class The2DArray {

public static void main(String[] args) {

} //End of main

} //End of class

7 [] isArrayEquals()

2 (15 )public class EqualityOf2DArray {


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} //End of main

} //End of class

8 [- ] test -

365 1 1 31 DataExperiment (50 )1) max() (8 )2)

min()(8 )3) middleRange() (+/ 2) (8 )4)

meanOfMonth()(8 )5) dataOfDay()(8 )6)

main()test12 ()(10 )

import java.util.Scanner;import jlab.graphics.DWindow;

public class DataExperiment {

public static double max(double t[][]) {

} //End of max()


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public static double min(double t[][]) {

} //End of min()

public static double middleRange(double t[][]) {

} //End of avgRange()

public static double meanOfMonth(double t[][], int m) {

} //End of meanOfMonth()

public static double dataOfDay(double t[][], int d, int m) {

} //End of dataOfDay()


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} //End of main()

} //End of Class

9 [ ] MatrixOperation

(60 )

a =

3462

9531b =

01

84

63

c =

966

2117

135

420

m = ( ) cbaT

T

4

12

import java.util.Scanner;

public class MatrixOperation {//[ ] addMatrix() (10 )


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//[ ] mulScalarMatrix()

(10 )

//[] transposeMatrix() (10 )


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//[] mulMatrix() (10 )

//[ ] printMatrix() (10 )

//[] main() a, b c Initialized List x (10 )



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} //End of main

} //End of class

10 [] splitRowOfMatrix() a[][] = {{1,2}, {2,3,4}, {1,3,5,6}}splitRowOfMatrix(a,1) = {1,2}splitRowOfMatrix(a,2) = {2,3,4} splitRowOfMatrix(a,4) = { }(10 )


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11 [ ] splitColumnOfMatrix()a[][] = {{1,2,2}, {2,3,4}, {1,3,5}}splitColumnOfMatrix(a,1) = {1,2,1}splitColumnOfMatrix(a,3) = {2,4,5}splitColumnOfMatrix(a,0) = { }(10 )

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Java Programming - Chapter 10 (in Thai)

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