java数组合并问题

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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;i<b.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;
}

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