res[i] = stack.length ? stack.at(-1) : -1;
�@�Ȃ��ł��m���E�F�[�͐��E�ő��̃T�[�����A�o���ŁA���Ƃ̊�Y�Ƃ̈��Ƃ����Ă��ߌ��ł͂����܂����B�`�����씼���ő��̐��Y���_�Ƃ��đ��݊��������Ă����A���{���Ƃ������i�o���Ă��܂��B
。搜狗输入法2026对此有专业解读
ITmedia�̓A�C�e�B���f�B�A�������Ђ̓o�^���W�ł��B
But more than that, they taught me how much more fun it was to learn by playing with an interactive, dynamic program instead of passively reading about concepts in a book. […]