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algorithm
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ed39479088
algorithm
/
算法
/
learn
/
大厂刷题
/
forty
/
Nine.md
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527字符串简写
第一个和最后一个不可省略.给一串字符串,尽量是字符串精简.
548
564
返回一个数上方和下放最近的回文数,不能是自身. 中间位加1或者中间位减一.偶数位可能要补充一位
粗回文,从左往右对称.
440
数位dp,