两个数组对应数相减java_Java 将两个数组相减（按组件）

╰半橙微兮° 2022-10-23 05:54 261阅读 0赞

// 来自 n o w j a v a . c o m - 时代Java

//package com.nowjava;

public class Main \{

public static void main(String\[\] argv) throws Exception \{

double\[\] a = new double\[\] \{ 34.45, 35.45, 36.67, 37.78, 37.0000,

37.1234, 67.2344, 68.34534, 69.87700 \};

double\[\] b = new double\[\] \{ 34.45, 35.45, 36.67, 37.78, 37.0000,

37.1234, 67.2344, 68.34534, 69.87700 \};

System.out.println(java.util.Arrays.toString(subtract(a, b)));

/\*\*

\* Subtracts the two arrays together (componentwise)

\* @throws IllegalArgumentException if the

\* two arrays don't have the same length.

\*/

public static double\[\] subtract(double\[\] a, double\[\] b) \{

if (a.length != b.length) \{

throw new IllegalArgumentException(

"To add two arrays, they must have the same length : "

/\*

from n o w j a v a . c o m

\*/

\+ a.length + ", " + b.length);

double\[\] ans = copy(a);

for (int i = 0; i < a.length; i++) \{

ans\[i\] -= b\[i\];

return (ans);

/\*\*

\* Subtracts the two arrays together (componentwise).

\* @throws IllegalArgumentException if the

\* two arrays don't have the same length.

\*/

public static int\[\] subtract(int\[\] a, int\[\] b) \{

if (a.length != b.length) \{

throw new IllegalArgumentException(

"To add two arrays, they must have the same length : "

\+ a.length + ", " + b.length);

int\[\] ans = copy(a);

for (int i = 0; i < a.length; i++) \{

ans\[i\] -= b\[i\];

return (ans);

/\*\*

\* Returns a comma delimited string representing the value of the array.

\*/

public static String toString(double\[\] array) \{

StringBuffer buf = new StringBuffer(array.length);

int i;

for (i = 0; i < array.length - 1; i++) \{

buf.append(array\[i\]);

buf.append(',');

buf.append(array\[i\]);

return buf.toString();

/\*\*

\* Returns a comma delimited string representing the value of the array.

\*/

public static String toString(double\[\]\[\] array) \{

StringBuffer buf = new StringBuffer();

for (int k = 0; k < array.length; k++) \{

buf.append(toString(array\[k\]));

buf.append(System.getProperty("line.separator"));

return buf.toString();

/\*\*

\* Returns a comma delimited string representing the value of the array.

\*/

public static String toString(int\[\] array) \{

StringBuffer buf = new StringBuffer(array.length);

int i;

for (i = 0; i < array.length - 1; i++) \{

buf.append(array\[i\]);

buf.append(',');

buf.append(array\[i\]);

return buf.toString();

/\*\*

\* Returns a comma delimited string representing the value of the array.

\*/

public static String toString(int\[\]\[\] array) \{

StringBuffer buf = new StringBuffer();

for (int k = 0; k < array.length; k++) \{

buf.append(toString(array\[k\]));

buf.append(System.getProperty("line.separator"));

return buf.toString();

/\*\*

\* Returns a copy of the array.

\*/

//a call to array.clone() may also work although this is a primitive type. I haven't checked

//it even may be faster

public static int\[\] copy(int\[\] array) \{

int\[\] result;

result = new int\[array.length\];

System.arraycopy(array, 0, result, 0, array.length);

return result;

/\*\*

\* Returns a copy of the array.

\*/

//a call to array.clone() may also work although this is a primitive type. I haven't checked

//it even may be faster

public static long\[\] copy(long\[\] array) \{

long\[\] result;

result = new long\[array.length\];

System.arraycopy(array, 0, result, 0, array.length);

return result;

/\*\*

\* Returns a copy of the array.

\*/

//a call to array.clone() may also work although this is a primitive type. I haven't checked

//it even may be faster

public static float\[\] copy(float\[\] array) \{

float\[\] result;

result = new float\[array.length\];

System.arraycopy(array, 0, result, 0, array.length);

return result;

/\*\*

\* Returns a copy of the array.

\*/

/\*\*代码未完, 请加载全部代码(NowJava.com).\*\*/

两个数组对应数相减java_Java 将两个数组相减（按组件）

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