Commit 9bbf1e2

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add 0390 folder & cpp(12ms) version

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	`1`	`+class Solution {`
	`2`	`+public:`
	`3`	`+ bool validUtf8(vector<int>& data) {`
	`4`	`+ const unsigned modeContinue = 0xc0 ;`
	`5`	`+`
	`6`	`+ int conti = 0 ;`
	`7`	`+ for (auto it = data.begin(); it < data.end(); ++it)`
	`8`	`+ {`
	`9`	`+`
	`10`	`+ if (0 == conti) // 首字节`
	`11`	`+ {`
	`12`	`+ if (*it < 0x80)`
	`13`	`+ continue ;`
	`14`	`+ else if (*it < 0xe0)`
	`15`	`+ conti = 1 ;`
	`16`	`+ else if (*it < 0xf0)`
	`17`	`+ conti = 2 ;`
	`18`	`+ else if (*it < 0xf8)`
	`19`	`+ conti = 3 ;`
	`20`	`+ else`
	`21`	`+ return false ;`
	`22`	`+ }`
	`23`	`+ else // 后续字节`
	`24`	`+ {`
	`25`	`+ --conti ;`
	`26`	`+ if ((*it & modeContinue) != 0x80)`
	`27`	`+ return false ;`
	`28`	`+ }`
	`29`	`+ }`
	`30`	`+`
	`31`	`+ return 0 == conti ;`
	`32`	`+ }`
	`33`	`+};`

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