Method get

src/class172/Code06_TextEditor1.java:158–173

(int pos, int len)

	// 从整个文章的pos位置，往后len的长度，这些内容找到，写入进str
	public static void get(int pos, int len) {
		find(pos);
		int curb = bi;
		pos = pi;
		int done = (len < siz[curb] - pos) ? len : (siz[curb] - pos);
		System.arraycopy(space[curb], pos, str, 0, done);
		curb = nxt[curb];
		while (curb != -1 && done + siz[curb] <= len) {
			System.arraycopy(space[curb], 0, str, done, siz[curb]);
			done += siz[curb];
			curb = nxt[curb];
		}
		if (curb != -1 && done < len) {
			System.arraycopy(space[curb], 0, str, done, len - done);
		}
	}

	public static void main(String[] args) throws Exception {
		FastReader in = new FastReader();