init

24/06/520.c

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+//
+// Created by 李洋 on 2024/6/23.
+//
+
+#ifndef LEETCODE_C_520_CPP
+#define LEETCODE_C_520_CPP
+
+#include <stdlib.h>
+#include "ctype.h"
+#include "stdbool.h"
+#include "string.h"
+
+char *toLowerCase(const char *str) {
+    char *result = (char *) malloc(sizeof(char) * strlen(str));
+    for (int i = 0; i < strlen(str); i++) {
+        result[i]= tolower(str[i]);
+    }
+    return result;
+}
+
+// 通过数值判断
+bool detectCapitalUse(char *word) {
+    char *lower = toLowerCase(word);
+    int count = 0;
+    for (int i = 0; i < strlen(word); ++i) {
+        count += lower[i] - word[i];
+    }
+    int interval = 'a' - 'A';
+    if ((count == interval && word[0] >= 'A' && word[0] <= 'Z') || count == interval * strlen(word) || count == 0) {
+        return true;
+    }
+    return false;
+}
+
+bool run() {
+    return detectCapitalUse("USA");
+}
+
+#endif //LEETCODE_C_520_CPP