java期末编程题.docx

1、java期末编程题实验（一） 流程控制 输入源代码package com.fafu.data;import java.util.Scanner;public class DataTransfer /* * param args */ public static String transfer2Other(int num, int base) String str = ; while(num != 0) str +=( (num % base = 10) ? (char)(A+ (num % 10) : num % base); num /= base; return str; public s

2、tatic String toBinary(int num) return DataTransfer.transfer2Other(num, 2); public static String toOctal(int num) return DataTransfer.transfer2Other(num, 8); public static String toHexadecimal(int num) return DataTransfer.transfer2Other(num, 16); public static String Reverse(String s) String str = ;

3、for(int i = s.length()-1; i = 0; -i) str += (s.charAt(i); return str; public static void main(String args) / TODO Auto-generated method stub Scanner input = new Scanner(System.in); System.out.print(Enter a number :); int n = input.nextInt(); System.out.print(Enter a base :); int base = input.nextInt

4、(); System.out.println(n + transfered by + base + is + Reverse(DataTransfer.transfer2Other(n, base); System.out.println(n + transfered by 2 is + Reverse(DataTransfer.transfer2Other(n, 2); System.out.println(n + transfered by 8 is + Reverse(DataTransfer.transfer2Other(n, 8); System.out.println(n + tr

5、ansfered by 16 is + Reverse(DataTransfer.transfer2Other(n, 16); 实验（二） 数组package com.fafu.experiment;import java.util.Scanner;/* * author Administrator * */public class MatrixTest /* * param args */ /* * 一维矩阵最大值 * param matrix * return */ public static int max(int matrix) int tmp = matrix0; for(int i

6、 = 1; i matrix.length; +i) if(tmp matrixi) tmp = matrixi; return tmp; /* * 二维矩阵最大值 * param matrix * return */ public static int max(int matrix ) int tmp = matrix00; for(int row = 0; row matrix.length; +row) for(int col = 0; col matrixrow.length; +col) if(tmp matrixrowcol) tmp = matrixrowcol; return

7、tmp; /* * 一维矩阵平均值 * param matrix * return */ public static double average(int matrix) double sum = 0.0; for(int i = 0; i matrix.length; +i) sum += matrixi; return sum / matrix.length; /* * 二维矩阵平均值 * param matrix * return */ public static double average(int matrix ) double sum = 0.0; int max_col = ma

8、trix0.length; for(int row = 0; row matrix.length; +row) if(max_col matrixrow.length) max_col = matrixrow.length; for(int col = 0; col matrixrow.length; +col) sum += matrixrowcol; return sum / (matrix.length * max_col); /* * 行列相同的两个矩阵相加 * param a * param b * return */ public static int add(int a, int

9、 b) int row = 0, col = 0; for(row = 0; row a.length; +row) for(col = 0; col arow.length; +col) arowcol += (arowcol + browcol); return a; /* * 两个矩阵相乘 * param a * param b * return */ public static int multiply(int a, int b) int tmp = new inta.lengthb0.length; for(int i = 0; i a.length; +i) for(int j =

10、 0; j bi.length; +j) for(int k = 0; k b.length; +k) tmpij += (aik * bkj); return tmp; SuppressWarnings(static-access) public static void main(String args) / TODO Auto-generated method stub System.out.println(Enter one-array length:); SuppressWarnings(resource) Scanner input = new Scanner(System.in);

11、 int n = input.nextInt(); int a = new intn; System.out.println(enter elements:); for(int i = 0; i n; +i) ai = input.nextInt(); System.out.println(Enter two-array row length:); int p = input.nextInt(); System.out.println(Enter two-array col length:); int q = input.nextInt(); int matrixA = new intpq;

12、/矩阵A System.out.println(enter elements:); for(int row = 0; row p; +row) for(int col = 0; col q; +col) matrixArowcol = input.nextInt(); System.out.println(Enter another two-array row length:); int r = input.nextInt(); System.out.println(Enter another two-array col length:); int t = input.nextInt(); i

13、nt matrixB = new intrt; if(q != r) System.out.println(a two-array col length does not equal another two-array row length.); System.exit(0); System.out.println(enter elements:); /矩阵B for(int row = 0; row r; +row) for(int col = 0; col t; +col) matrixBrowcol = input.nextInt(); /MatrixTest matrix = new

14、MatrixTest(a); MatrixTest matrix = new MatrixTest(); System.out.println(max of a array is + matrix.max(a); System.out.println(max of two array is + matrix.max(matrixA); System.out.println(average of a array is + matrix.average(a); System.out.println(average of two array is + matrix.average(matrixA);

15、 int tmp = matrix.add(matrixA, matrixA); System.out.println(one two-array add another two-arry is ); for(int i = 0; i tmp.length; +i) for(int j = 0; j tmpi.length; +j) System.out.print(tmpij + t); System.out.println(); /*int matrixA = 1, 2, 3, 4,5,6; int matrixB = 1, 2,3,4, 0,5,4,7, 4,5,6,8; */ Syst

16、em.out.println(one two-array multiply another two-arry is ); int tm = matrix.multiply(matrixA, matrixB); for(int i = 0; i tm.length; +i) for(int j = 0; j = 0.0 ? + : ); return (this.realPart + str + this.imaginaryPart + i); public static void main(String args) Complex tmp = new Complex(); System.out

17、.print(第一个复数：); Complex complexNumA = new Complex(1, 2); System.out.println(complexNumA.toString(); System.out.print(第二个复数：); Complex complexNumB = new Complex(5, -3); System.out.println(complexNumB.toString(); System.out.println(复数相加：); tmp = complexNumA.plus(complexNumB); System.out.println(tmp.to

18、String(); System.out.println(复数相减：); tmp = complexNumA.minus(complexNumB); System.out.println(tmp.toString(); System.out.println(复数相乘：); tmp = complexNumA.times(complexNumB); System.out.println(tmp.toString(); System.out.println(复数相除：); tmp = complexNumA.divideBy(complexNumB); System.out.println(tmp.toString(); System.out.println(第一个的共轭复数：); tmp = complexNumA.con