1 class Solution {
2 public:
3 /**
4 * @param string: An array of Char
5 * @param length: The true length of the string
6 * @return: The true length of new string
7 */
8 int replaceBlank(char string[], int length) {
9 // Write your code here
10 if (!length) return 0;
11 int spaces = 0;
12 for (int i = 0; string[i]; i++)
13 if (string[i] == ' ')
14 spaces++;
15 if (!spaces) return length;
16 int newlen = length + spaces * 2;
17 int pn = newlen - 1, p = length - 1;
18 while (p >= 0 && pn >= 0) {
19 if (string[p] == ' ') {
20 string[pn--] = '0';
21 string[pn--] = '2';
22 string[pn--] = '%';
23 p--;
24 }
25 else string[pn--] = string[p--];
26 }
27 return newlen;
28 }
29 };
