15 Math
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感觉数学很多题都只能靠人品来记住。=_=|||
(50)
(67)
(this one has some variation in ctci & coding intervew, implement + - * /) - (371. Sum of Two Integers)
--- 牛顿法, 这题劝你善良背2分,因为你是背不鸟牛顿法的。
(L414)
190 Reverse Bits
(L413)
223 Number of Digit One -- 数1的个数 -- ctci 17.6
L3 digit count -- 233的高级版,数任意一个数字的个数
357 Count Numbers with Unique Digits
L518 Super Ugly Number (313)
9 Palindrome Number
Other Related :
RootOfNumber -- pramp, 进化版的L141 Sqrt(x), 这题就变了一下,可以开n方。
L584 Drop Eggs II -- DP
264 Ugly Number II (L4) -- DP
-- sheive
(263)
-- snapchat
(L411)
(L184)
-- ctci 16.26
(L656)
(L46)
(L47)
-- cc16.8
-- 2分
-- can use rolling hash as well
-- rolling hash