java分割成數組

❺ java中如何用split對一個字元串按逗號和分號分割成數組

importjava.util.Arrays;
publicclassDay21_A{
	publicstaticvoidmain(String[]args){
		String[]arr=newString("張三,李四,王五;趙六").split("[\,\;]");
		System.out.println(Arrays.toString(arr));
	}
}

❻ java 怎麼將一個數組拆分成兩個數組

package Test20201227;

import java.util.Arrays;

public class Test03 {

public static void main(String[] args) {

//待拆分的A數組

int a[] = {1,2,3,4,5,6,7,8,9,10};

//新數組長度：先定義為a數組長度的一般，如果有剩餘可以再取值！

int newArrayLength = a.length/2;

//接收拆分的bc數組

int b[] = new int[a.length/2];

int c[] = new int[a.length/2];

int k = 0;//k用來記錄a的下標；

for(int i=0;i<newArrayLength;i++){

b[i] = a[k];

k++;

c[i] = a[k];

k++;

}

//如果a數組有多餘的值再取出

//判斷余數

int remainder = a.length%2;

if(remainder!=0){

//a數組多一個，則給b數組擴容，

b = Arrays.Of(b, b.length+1);

b[b.length-1] = a[k];

}

//查看結果

System.out.println("a數組(待拆分數組)： "+Arrays.toString(a));

System.out.println("b數組（拆分後第一數組）： "+Arrays.toString(b));

System.out.println("c數組（拆分後第二數組）： "+Arrays.toString(c));

}

}

❼ java中怎麼將數組拆分成多個數組

你可以將數組裝換成字元串，然後用字元串分割方法split（）將字元串分割成多個字元串數組。

❽ Java中將String類型分割成數組

定義數組，然後根據數組長度進行for循環，在循環體內進行賦值即可
String test = "aaaasdfs";
String[] arr = new String[test.length()];
for(int i = 0; i < test.length(); i++){
arr[i] = test.substring(i, i+1);
System.out.println(arr[i]);
}

❾ Java分割數組成子數組

import java.util.ArrayList;
import java.util.List;

public class ABC {

public static void main(String[] args) {

int[] ary = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18};//要分割的數組
int splitSize = 5;//分割的塊大小

Object[] subAry = splitAry(ary, splitSize);//分割後的子塊數組

for(Object obj: subAry){//列印輸出結果

int[] aryItem = (int[]) obj;

for(int i = 0; i < aryItem.length; i++){
System.out.print(aryItem[i] + ", ");
}
System.out.println();
}

}

private static Object[] splitAry(int[] ary, int subSize) {
int count = ary.length % subSize == 0 ? ary.length / subSize: ary.length / subSize + 1;

List<List<Integer>> subAryList = new ArrayList<List<Integer>>();

for (int i = 0; i < count; i++) {
int index = i * subSize;

List<Integer> list = new ArrayList<Integer>();
int j = 0;
while (j < subSize && index < ary.length) {
list.add(ary[index++]);
j++;
}

subAryList.add(list);
}

Object[] subAry = new Object[subAryList.size()];

for(int i = 0; i < subAryList.size(); i++){
List<Integer> subList = subAryList.get(i);

int[] subAryItem = new int[subList.size()];
for(int j = 0; j < subList.size(); j++){
subAryItem[j] = subList.get(j).intValue();
}

subAry[i] = subAryItem;
}

return subAry;
}
}

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0, 1, 2, 3, 4,
5, 6, 7, 8, 9,
10, 11, 12, 13, 14,
15, 16, 17, 18,