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343. 整数拆分.md

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递推公式:dp[i] = max(dp[i], max((i - j) * j, dp[i - j] * j));

func integerBreak(n int) int {
    dp :=make([]int,n+1)
    dp[2]=1
    for i:=2;i<=n;i++{
        for j:=1;j<i-1;j++{
            dp[i]=max(dp[i],j*(i-j),j*dp[i-j])
        }
    }

    return dp[n]
}

func max(a,b,c int)int{
    if a>=b&&a>=c{
        return a
    }
    if b>=a&&b>=c{
        return b
    }

    return c
}