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java数组合并,java数组合并,相同数值的相加

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java怎么将2个数组的数据合并?

concat()方法是对字符串的操作,不是对整数或数组。

concat()用法:

String a="abc";

String b="edf";

String c=a.concat(b);

c的值为“abcdef"

数组可以用for循环合并:

public static void main(String[] args){

int a[]={1,7,9,11,13,15,17,19};

int b[]={2,4,6,8,10};

int aL=a.length;

int bL=b.length;

int lenght=aL+bL;

int[] c=new int[lenght];

for(int i=0;ilenght;i++){

if(iaL){//

c[i]=a[i];

}

else{

c[i]=b[i-aL];

}

}

for(int i=0;ic.length;i++){

System.out.print(c[i]+" ");

}

}

Java中如何把两个数组合并为一个

import java.util.Arrays;

//Java中如何把两个数组合并为一个

public class gog {

public static void main(String[] args) {

String [] str1 = {"J","a","v","a","中"};

String [] str2 = {"如","何","把","两","个","数","组","合","并","为","一","个"};

int strLen1=str1.length;//保存第一个数组长度

int strLen2=str2.length;//保存第二个数组长度

str1= Arrays.copyOf(str1,strLen1+ strLen2);//扩容

System.arraycopy(str2, 0, str1, strLen1,strLen2 );//将第二个数组与第一个数组合并

System.out.println(Arrays.toString(str1));//输出数组

}

}

java中怎么合并两个数组 简单明了的

int[] arr1 = {1,2,3,4,11};

int[] arr2 = {6,7,8,9,10};

int newLength = arr1.length + arr2.length;

int[] arr_target = new int[newLength];

//参数:源数组,源数组起始位置,目标数组,目标数组起始位置,复制长度

System.arraycopy(arr1, 0, arr_target, 0, arr1.length);

System.arraycopy(arr2, 0, arr_target, arr1.length, arr2.length);

//输出合并后数组

for (int i : arr_target) {

System.out.println(i);

}

//排序

Arrays.sort(arr_target);

//输出排序数组

for (int i : arr_target) {

System.out.println(i);

}

//逆序

int[] arr_reverse = new int[newLength];

int flag = 0;

for (int i : arr_target) {

arr_reverse[newLength - flag - 1] = i;

flag++;

}

//输出逆序数组

for (int i : arr_reverse) {

System.out.println(i);

}

数组合并不一定非得遍历

具体的输出题主自己再修改吧

Java如何合并两个数组

java数组合并问题

三种字符数组合并的方法

public static String[] getOneArray() {

String[] a = { "0", "1", "2" };

String[] b = { "0", "1", "2" };

String[] c = new String[a.length + b.length];

for (int j = 0; j a.length; ++j) {

c[j] = a[j];

}

for (int j = 0; j b.length; ++j) {

c[a.length + j] = b[j];

}

return c;

}

public static Object[] getTwoArray() {

String[] a = { "0", "1", "2" };

String[] b = { "0", "1", "2" };

List aL = Arrays.asList(a);

List bL = Arrays.asList(b);

List resultList = new ArrayList();

resultList.addAll(aL);

resultList.addAll(bL);

Object[] result = resultList.toArray();

return result;

}

public static String[] getThreeArray() {

String[] a = { "0", "1", "2", "3" };

String[] b = { "4", "5", "6", "7", "8" };

String[] c = new String[a.length + b.length];

System.arraycopy(a, 0, c, 0, a.length);

System.arraycopy(b, 0, c, a.length, b.length);

return c;

}

1.两个字符数组合并的问题

public String[] getMergeArray(String[] al,String[] bl) {

String[] a = al;

String[] b = bl;

String[] c = new String[a.length + b.length];

System.arraycopy(a, 0, c, 0, a.length);

System.arraycopy(b, 0, c, a.length, b.length);

return c;

}

2.字符数组和整形数组合并问题

public int[] getIntArray(int[] al,String[] bl) {

int[] a = al;

String[] b = bl;

int[] ia=new int[b.length];

for(int i=0;ib.length;i++){

ia[i]=Integer.parseInt(b[i]);

}

int[] c = new int[a.length + ia.length];

System.arraycopy(a, 0, c, 0, a.length);

System.arraycopy(ia, 0, c, a.length, ia.length);

return c;

}