src/main/java/wycc/util/ArrayUtils.java
public static int[] append(int first, int second, int[] rhs) {
		int[] rs = new int[rhs.length+2];
		rs[0] = first;
		rs[1] = second;
		System.arraycopy(rhs, 0, rs, 2, rhs.length);
		return rs;
	}
public static int[] append(int first, int second, int[] rhs) {
		int[] rs = new int[rhs.length+2];
		rs[0] = first;
		rs[1] = second;
		System.arraycopy(rhs, 0, rs, 2, rhs.length);
		return rs;
	}
Append two integer items to the front of an array of integer type
together, producing a fresh array whose length equals that of the third
plus two.

@param lhs
The left-hand side. Elements of this array will be copied
first into the resulting array.
@param rhs
The right-hand side. Elements of this array will be copied
last into the resulting array.
@return