題目描述
請實現(xiàn)一個函數(shù)，將一個字符串中的每個空格替換成“%20”秉撇。例如，當(dāng)字符串為We Are Happy.則經(jīng)過替換之后的字符串為We%20Are%20Happy。
思路
字符串轉(zhuǎn)為字符數(shù)組轰豆，遍歷替換即可
Code
- Python
# -*- coding:utf-8 -*-
class Solution:
# s 源字符串
def replaceSpace(self, s):
arr = [c for c in s]
for i, c in enumerate(arr):
if c is ' ':
arr[i] = '%20'
return ''.join(arr)
- JavaScript
function replaceSpace(str)
{
arr = [...str].map(v => v === ' ' ? '%20' : v)
return arr.join('')
}
