Merge pull request #2430 from qiuzidian/patch-1

添加 0383.赎金信 c语言版本解法

problems/0383.赎金信.md

@@ -445,6 +445,25 @@ public bool CanConstruct(string ransomNote, string magazine) {
         return true;
     }
 
+```
+
+### C：
+
+```c
+bool canConstruct(char* ransomNote, char* magazine) {
+    // 定义哈希映射数组
+    int hashmap[26] = {0};
+    // 对magazine中字符计数
+    while (*magazine != '\0') hashmap[*magazine++ % 26]++;
+    // 遍历ransomNote，对应的字符自减，小于0说明该字符magazine没有或不足够表示
+    while (*ransomNote != '\0') hashmap[*ransomNote++ % 26]--;
+    // 如果数组中存在负数，说明ransomNote不能由magazine里面的字符构成
+    for (int i = 0; i < 26; i++) {
+        if (hashmap[i] < 0) return false;
+    }
+    return true;
+}
+
 ```
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