2712

include/solution/2712.h

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+//
+// Created by xfj12 on 2025/3/27.
+//
+
+#ifndef INC_2712_H
+#define INC_2712_H
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+    long long minimumCost(char *s);
+#ifdef __cplusplus
+}
+#endif
+#endif // INC_2712_H

src/2712.c

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+//
+// Created by xfj12 on 2025/3/27.
+//
+#include <solution/2712.h>
+#include <string.h>
+#define min(a, b) (a < b) ? (a) : (b)
+
+long long minimumCost(char *s)
+{
+    int n = strlen(s);
+    long long ans = 0;
+
+    for (int i = 1; i < n; i++)
+        if (s[i] != s[i - 1])
+            ans += min(i, n - i);
+
+    return ans;
+}

tests/test_2712.cpp

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+#include <gtest/gtest.h>
+#include <solution/2712.h>
+//
+// Created by xfj12 on 2025/3/27.
+//
+TEST(MinimumCostTest, Test1)
+{
+    char s[] = "0011";
+    long long expected = 2;
+    EXPECT_EQ(minimumCost(s), expected);
+}
+
+// 测试用例 2
+TEST(MinimumCostTest, Test2)
+{
+    char s[] = "010101";
+    long long expected = 9;
+    EXPECT_EQ(minimumCost(s), expected);
+}