原题 判断子序列
/** * @param {string} s * @param {string} t * @return {boolean} */ var isSubsequence = function(s, t) { var sl = s.length; var tl = t.length; if (sl === 0) { return true; } if (tl < sl) { return false; } var sindex = 0; for (let i = 0; i < tl; i++) { if (s[sindex] == t[i]) { sindex++; } if (sindex === sl) { return true; } } return false; };转载于:https://www.cnblogs.com/ruoh3kou/p/9893430.html
