Open xszi opened 3 years ago
方法1:API
const isBackWord = (str) => {
if (!typeof str !== 'string') return false
return str.split('').reverse().join('') === str
}
方法2:双指针
const isBackWord = (str) => {
if (!typeof str !== 'string') return false
let left = 0, right = str.length - 1
while (left < right) {
if (str.charAt(left) !== str.charAt(right)) return false
left++
right--
}
return true
}
示例1:
示例2: