blob: 0dc46419385cc1f577f6935cf9c3b72cccd08018 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
// 1108. Defanging an IP Address
#include "leetcode.h"
/*
* given a valid ipv4 'address', return a defanged version of that ip address. a
* defanged ip address replaces every period "." with '[.]'.
*/
char *defangIPaddr(char *address) {
char *ip = (char *)calloc(sizeof(char), sizeof("###[.]###[.]###[.]###"));
char *ans = ip;
for (char *i = address; *i; i++) {
if (*i == '.') {
*ip++ = '[';
*ip++ = '.';
*ip++ = ']';
} else
*ip++ = *i;
}
return ans;
}
int main() {
char *a1 = "1.1.1.1", *dipa1 = defangIPaddr(a1);
char *a2 = "255.100.50.0", *dipa2 = defangIPaddr(a2);
printf("%s\n", dipa1); // expect: 1[.]1[.]1[.]1
printf("%s\n", dipa2); // expect: 255[.]100[.]50[.]0
free(dipa1);
free(dipa2);
}
|