303

include/solution/303.h

@@ -0,0 +1,21 @@
+#ifndef INC_303_H
+#define INC_303_H
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+    typedef struct
+    {
+        int *data;
+        int size;
+    } NumArray;
+
+    NumArray *numArrayCreate(int *nums, int numsSize);
+
+    int numArraySumRange(NumArray *obj, int left, int right);
+
+    void numArrayFree(NumArray *obj);
+#ifdef __cplusplus
+}
+#endif
+#endif

src/303.c

@@ -0,0 +1,44 @@
+#define PREFIX
+
+#include <solution/303.h>
+#include <stdlib.h>
+
+#ifdef PREFIX
+#else
+#include <string.h>
+#endif
+
+NumArray *numArrayCreate(int *nums, int numsSize)
+{
+    NumArray *ret = malloc(sizeof(NumArray));
+    ret->size = numsSize;
+#ifdef PREFIX
+    ret->data = malloc(sizeof(int) * (numsSize + 1));
+    ret->data[0] = 0;
+    for (int i = 0; i < numsSize; i++)
+        ret->data[i + 1] = ret->data[i] + nums[i];
+#else
+    ret->data = malloc(sizeof(int) * numsSize);
+    memcpy(ret->data, nums, sizeof(int) * numsSize);
+#endif
+    return ret;
+}
+
+int numArraySumRange(NumArray *obj, int left, int right)
+{
+#ifdef PREFIX
+    return obj->data[right + 1] - obj->data[left];
+#else
+    int sum = 0;
+    for (int i = left; i <= right; i++)
+        sum += obj->data[i];
+
+    return sum;
+#endif
+}
+
+void numArrayFree(NumArray *obj)
+{
+    free(obj->data);
+    free(obj);
+}

tests/test_303.cpp

@@ -0,0 +1,38 @@
+#include <gtest/gtest.h>
+#include <solution/303.h>
+
+class NumArrayTest : public ::testing::Test
+{
+  protected:
+    NumArray *numArray = nullptr;
+
+    void SetUp() override
+    {
+        int init[] = {-2, 0, 3, -5, 2, -1};
+        numArray = numArrayCreate(init, sizeof(init) / sizeof(int));
+        ASSERT_NE(numArray, nullptr); // 确保初始化成功
+    }
+
+    void TearDown() override
+    {
+        numArrayFree(numArray);
+    }
+};
+
+// 示例测试：sumRange(0, 2) == 1
+TEST_F(NumArrayTest, SumRange_0_2)
+{
+    EXPECT_EQ(numArraySumRange(numArray, 0, 2), 1);
+}
+
+// 示例测试：sumRange(2, 5) == -1
+TEST_F(NumArrayTest, SumRange_2_5)
+{
+    EXPECT_EQ(numArraySumRange(numArray, 2, 5), -1);
+}
+
+// 示例测试：sumRange(0, 5) == -3
+TEST_F(NumArrayTest, SumRange_0_5)
+{
+    EXPECT_EQ(numArraySumRange(numArray, 0, 5), -3);
+}