题解 | #检查重复字符串#
检查重复字符串
https://www.nowcoder.com/practice/5ef31f11adf64d9fb18d74860e9ab873
function containsRepeatingLetter(str) { let reg = /[a-zA-Z]/ for (let i = 0; i < str.length; i++) { if (str[i] === str[i + 1] && reg.test(str[i])) { return true; } } return false; }