let countBinarySubstrings = function (s) { let n = 0, pre = 0, curr = 1 for (let i = 0, len = s.length; i < len - 1; i++) { if (s[i] == s[i+1]) { curr++ } else { pre = curr curr = 1 } if (pre >= curr) n++ } return n }
原文：https://www.cnblogs.com/TTblog5/p/12602984.html