package Test20201227
import java.util.Arrays
public class Test03 {
public static void main(String[] args) {
//待拆分的A数组
int a[] = {1,2,3,4,5,6,7,8,9,10}
//新数组长度：先定义为a数组长度的一般，如果有剩余可以再取值！
int newArrayLength = a.length/2
//接收拆分的bc数组
int b[] = new int[a.length/2]
int c[] = new int[a.length/2]
int k = 0//k用来记录a的下标；
for(int i=0i<newArrayLengthi++){
b[i] = a[k]
k++
c[i] = a[k]
k++
}
//如果a数组有多余的值再取出
//判断余数
int remainder = a.length%2
if(remainder!=0){
//a数组多一个，则给b数组扩容，
b = Arrays.copyOf(b, b.length+1)
b[b.length-1] = a[k]
}
//查看结果
System.out.println("a数组(待拆分数组)： "+Arrays.toString(a))
System.out.println("b数组（拆分后第一数组）： "+Arrays.toString(b))
System.out.println("c数组（拆分后第二数组）： "+Arrays.toString(c))
}
}
import java.util.Arrayspublic class Du2 {
public static void main(String[] args) {
int[] ary = {50 ,70,43,99,77,66,55}
int passCount = 0
for(int i = 0 i< ary.length i++){
if(ary[i] >= 60){
passCount++
}
}
int[] passAry = new int[passCount]
int[] failAry = new int[ary.length - passCount]
for(int i =0, pass=0, fail=0 i < ary.length i++){
if(ary[i] >= 60){
passAry[pass++]= ary[i]
}else{
failAry[fail++] = ary[i]
}
}
System.out.println("及格数组：" + Arrays.toString(passAry))
System.out.println("不及格数组：" + Arrays.toString(failAry))
}
}
import java.util.ArrayListimport 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}//要分割的数组
int splitSize = 5//分割的块大小
Object[] subAry = splitAry(ary, splitSize)//分割后的子块数组
for(Object obj: subAry){//打印输出结果
int[] aryItem = (int[]) obj
for(int i = 0i <aryItem.lengthi++){
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 = 0i <counti++) {
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 = 0i <subAryList.size()i++){
List<Integer>subList = subAryList.get(i)
int[] subAryItem = new int[subList.size()]
for(int j = 0j <subList.size()j++){
subAryItem[j] = subList.get(j).intValue()
}
subAry[i] = subAryItem
}
return subAry
}
}
------------------
0, 1, 2, 3, 4,
5, 6, 7, 8, 9,
10, 11, 12, 13, 14,
15, 16, 17, 18,
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