committing everything squashed

01/main.c

@@ -0,0 +1,63 @@
+#include <stdio.h>
+
+#define MAX_LENGTH 52
+
+int convert(char* c) {
+    switch (*c) {
+        case 'z':
+            return (c[1] == 'e' && c[2] == 'r' && c[3] == 'o') ? 0 : -1;
+        case 'o':
+            return (c[1] == 'n' && c[2] == 'e') ? 1 : -1;
+        case 't':
+            if (c[1] == 'w' && c[2] == 'o')
+                return 2;
+            else if (c[1] == 'h' && c[2] == 'r' && c[3] == 'e' && c[4] == 'e')
+                return 3;
+            else
+                return -1;
+        case 'f':
+            if (c[1] == 'o' && c[2] == 'u' && c[3] == 'r')
+                return 4;
+            else if (c[1] == 'i' && c[2] == 'v' && c[3] == 'e')
+                return 5;
+            else
+                return -1;
+        case 's':
+            if (c[1] == 'i' && c[2] == 'x')
+                return 6;
+            else if (c[1] == 'e' && c[2] == 'v' && c[3] == 'e' && c[4] == 'n')
+                return 7;
+            else
+                return -1;
+        case 'e':
+            return (c[1] == 'i' && c[2] == 'g' && c[3] == 'h' && c[4] == 't') ? 8 : -1;
+        case 'n':
+            return (c[1] == 'i' && c[2] == 'n' && c[3] == 'e') ? 9 : -1;
+    }
+    return -1;
+}
+
+int main(void) {
+    int num1, num2, sum, word_num;
+    char buf[MAX_LENGTH];
+
+    num1 = 0;
+    num2 = 0;
+    sum = 0;
+    while (fgets(buf, MAX_LENGTH, stdin)) {
+        for (char* c = buf; *c != '\n'; c++) {
+            if (*c >= '0' && *c <= '9') {
+                num1 = num1 == 0 ? *c - '0' : num1;
+                num2 = *c - '0';
+            } else if ((word_num = convert(c)) >= 0) {
+                num1 = num1 == 0 ? word_num : num1;
+                num2 = word_num;
+            }
+        }
+        sum += num1*10 + num2;
+        num1 = 0;
+    }
+    printf("%d\n", sum);
+    return 0;
+}
+

01/main1.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int main(void) {
+    int c, num1, num2, sum;
+    num1 = 0;
+    num2 = 0;
+    sum = 0;
+    while ((c = fgetc(stdin)) != EOF) {
+        if (c >= '0' && c <= '9') {
+            num1 = num1 == 0 ? c - '0' : num1;
+            num2 = c - '0';
+        } else if (c == '\n') {
+            sum += num1*10 + num2;
+            num1 = 0;
+        }
+    }
+    printf("%d\n", sum);
+    return 0;
+}
+

01/part1.sed

@@ -0,0 +1,12 @@
+s/one/o1e/g
+s/two/t2o/g
+s/three/t3e/g
+s/four/4/g
+s/five/5e/g
+s/six/6/g
+s/seven/7n/g
+s/eight/e8t/g
+s/nine/n9e/g
+s/[^0-9]//g
+s/^(.).*(.)$/\1\2/g
+s/^(.)$/\1\1/g

01/test.txt

@@ -0,0 +1,7 @@
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen