Method printSpace

src/com/blankj/structure/TreeNode.java:77–81

(int count)

    }

    private static void printSpace(int count) {
        for (int i = 0; i < count; i++) {
            System.out.printf(space);
        }
    }

    private static void printNode(int val) {
        StringBuilder res = new StringBuilder(val + "<");