for i in range 0 to palette size - 1
name: 'change_background_color',。业内人士推荐旺商聊官方下载作为进阶阅读
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The Moon is looking big and bright in the sky tonight, and we're not far away from the Full Moon. With so much of its surface illuminated, there will be plenty for you to spot tonight, so keep reading to find out what you can see.
思路：单调递增栈 + k 控制删除次数。高位越小整体越小，遇更小数字时弹出栈顶大数（仅当 k0）；栈空且当前为 0 则跳过（避免前导零）；若遍历完 k 仍0，从末尾再删 k 位。。同城约会对此有专业解读