Advent of Code

Check-in [c2af59b62e]
Login

Check-in [c2af59b62e]

Overview
Comment:201505 2nd star
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: c2af59b62ee256be760de34006c055b899bfe19184843324379b3611fab6b156
User & Date: nnz on 2024-12-15 12:24:55
Other Links: manifest | tags
Context
2024-12-15
13:12
201505 reworked my solution check-in: 02e370e22c user: nnz tags: trunk
12:24
201505 2nd star check-in: c2af59b62e user: nnz tags: trunk
11:44
201505 1st star check-in: 93e9164929 user: nnz tags: trunk
Changes
Hide Diffs Side-by-Side Diffs Ignore Whitespace Patch

Modified aoc2015.c from [2cf16828ff] to [1f1b4d89f8]. 

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
31
32
33
34



















35
36
37
38
39
40
41

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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61










+
-
+
-

+




-
-
+
+

-
+

-
-
+
+











+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+








#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "aocdailies.h"
#include "aocutils.h"

void aoc201505(char *data, size_t len) {
    (void)len; // unused argument
    unsigned lines = 0, nice = 0, nice2 = 0;
    char *line = strtok(data, "\n"), *vtest;
    char *line = strtok(data, "\n"), *curr;
    unsigned nice = 0;
    while (line) {
        lines++; // used in Part Two
        if (!strstr(line, "ab")) {
            if (!strstr(line, "cd")) {
                if (!strstr(line, "pq")) {
                    if (!strstr(line, "xy")) {
                        for (vtest = line; vtest[1]; vtest++) {
                            if (vtest[0] == vtest[1]) break;
                        for (curr = line; curr[1]; curr++) {
                            if (curr[0] == curr[1]) break;
                        }
                        if (vtest[0] == vtest[1]) {
                        if (curr[0] == curr[1]) {
                            unsigned vowels = 0;
                            for (vtest = line; *vtest; vtest++) {
                                if (strchr("aeiou", *vtest)) vowels++;
                            for (curr = line; *curr; curr++) {
                                if (strchr("aeiou", *curr)) vowels++;
                                if (vowels == 3) break;
                            }
                            nice += (vowels == 3);
                        }
                    }
                }
            }
        }
        line = strtok(NULL, "\n");
    }
    printf("There are %u nice strings.\n", nice);

    line = data;
    bool pair, hugged;
    while (lines--) {
        pair = hugged = false;
        for (curr = line; curr[3]; curr++) {
            char twostr[3] = {curr[0], curr[1], 0};
            if (strstr(curr+2, twostr)) pair = true;
            if (curr[0] == curr[2]) hugged = true;
            if (pair && hugged) break;
        }
        if (pair) {
            if (hugged) nice2++;
            else if (curr[0] == curr[2]) nice2++;
            else if (curr[1] == curr[3]) nice2++;
        }
        line += 1 + strlen(line); // go to next line, skip '\0' left from strtok
    }
    printf("There are %u nice strings under the new rules.\n", nice2);
}

void aoc201504(char *data, size_t len) {
    data[--len] = 0; // remove newline, adjust `len`
    char longkey[128];
    unsigned extra = 1;
    for (;;) {
︙