[Sync Iteration] c/etl/1

Author: exercism-solutions-syncer[bot]

solutions/c/etl/1/etl.c

@@ -0,0 +1,46 @@
+#include "etl.h"
+#include <ctype.h>
+#include <stdlib.h>
+
+int convert(const legacy_map *input, const size_t input_len, new_map **output) {
+    size_t total_key = 0, key_count = 0;
+    for (size_t i = 0; i < input_len; i++) {
+        legacy_map temp = input[i];
+        while (*temp.keys != '\0') {
+            total_key++;
+            temp.keys++;
+        }
+    }
+    if (total_key == 0) {
+        *output = NULL;
+        return 0;
+    }
+
+    *output = malloc(total_key * sizeof(new_map));
+    if (*output == NULL) {
+        return 0;
+    }
+    for (size_t i = 0; i < input_len; i++) {
+        legacy_map temp = input[i];
+        while (*temp.keys != '\0') {
+            (*output)[key_count].key = tolower(*temp.keys);
+            (*output)[key_count++].value = temp.value;
+            temp.keys++;
+        }
+    }
+    for (size_t i = 0; i < key_count-1; i++) {
+        int swapped = 0;
+        for (size_t j = 0; j < key_count-i-1; j++) {
+            if ((*output)[j].key > (*output)[j+1].key) {
+                new_map temp = (*output)[j];
+                (*output)[j] = (*output)[j+1];
+                (*output)[j+1] = temp;
+                swapped = 1;
+            }
+        }
+        if (swapped == 0) {
+            break;
+        }
+    }
+    return key_count;
+}

solutions/c/etl/1/etl.h

@@ -0,0 +1,18 @@
+#ifndef ETL_H
+#define ETL_H
+
+#include <stddef.h>
+
+typedef struct {
+   int value;
+   const char *keys;
+} legacy_map;
+
+typedef struct {
+   char key;
+   int value;
+} new_map;
+
+int convert(const legacy_map *input, const size_t input_len, new_map **output);
+
+#endif