Commit a3b818c

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feat: 1542. Find Longest Awesome Substring, hash+状压

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	`1`	`+/**`
	`2`	`+ * @param {string} s`
	`3`	`+ * @return {number}`
	`4`	`+ */`
	`5`	`+var longestAwesome = function(s) {`
	`6`	`+ // 状态: 10 个 0 到 10 个 1,表示 0~9 出现次数的奇偶性`
	`7`	`+ // mp[st] = i 表示状态 st 出现的最早下标`
	`8`	`+ let mp = {}, n = s.length, st = 0, ans = 1`
	`9`	`+ mp[0] = -1`
	`10`	`+ for (let i = 0; i < n; i++) {`
	`11`	`+ st ^= 1 << (s[i].charCodeAt(0) - '0'.charCodeAt(0))`
	`12`	`+ // console.log(i, st)`
	`13`	`+ if (mp[st] == null) mp[st] = i`
	`14`	`+`
	`15`	`+ // 偶数长度`
	`16`	`+ ans = Math.max(ans, i-mp[st])`
	`17`	`+ // 奇数长度`
	`18`	`+ for (let k = 0; k < 10; k++) {`
	`19`	`+ let su = st ^ (1 << k)`
	`20`	`+ if (mp[su] != null)`
	`21`	`+ ans = Math.max(ans, i-mp[su])`
	`22`	`+ }`
	`23`	`+ }`
	`24`	`+ return ans`
	`25`	`+};`

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