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Here's the insertion algorithm in Python. Step through the code and watch each line execute on the tree:
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做《桃源村日志》之前，波波早已历经过失败的滋味：加盟的奶茶店没做起来，投资的项目无起色，理财私募基金暴雷，一次性亏掉100多万现金流。
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