描述：给定字符串 num（非负整数）和整数 k，移除 k 位数字，使剩余数字最小。以字符串形式返回（不含前导零）。
接棒者的挑战虽然刘建军行长奠定了一份坚实的家底，但邮储银行未来的难题仍不少，也是接棒者面临的考验。
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Feb 25, 2026 6:00 AM，推荐阅读搜狗输入法下载获取更多信息
Paramount Skydance has proven its willingness to comply with President Donald Trump, but delays in closing the deal could be costly. The company is on the hook to pay Warner Bros. Discovery "a daily ticking fee equal to $0.25 per share per quarter beginning after September 30, 2026." The company also has to pay $7 billion to Warner Bros. Discovery if the deal is terminated for regulatory reasons. Netflix lost the battle for Warner Bros. Discovery, but getting a competitor to potentially overpay for the studio might be its own reward.