C版本、C#的git过滤文件

c/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+project(leetcode_c C)
+set(CMAKE_C_STANDARD 11)
+
+add_executable(leetcode_c main.c)
+

c/main.c

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+//
+// Created by Huang on 2021/11/9.
+//
+#include <stdio.h>
+
+int mySqrt(int x) {
+    union {
+        long long i;
+        double f;
+    }u;
+    double xHalf = 0.5 * x;
+    u.f = x;
+    u.i = 0x5FE6EC85E7DE30DALL - (u.i >> 1);
+    u.f = u.f * (1.5 - xHalf * u.f * u.f);
+    u.f = u.f * (1.5 - xHalf * u.f * u.f);
+    u.f = u.f * (1.5 - xHalf * u.f * u.f);
+    return 1.0 / u.f;
+}
+
+int mySqrt1(int x) {
+    double xHalf = 0.5 * x;
+    double f = x;
+    long long i = *(long long *) &f;
+    i = 0x5FE6EC85E7DE30DALL - (i >> 1);
+    f = *(double *) &i;
+    f = f * (1.5 - xHalf * f * f); // 牛顿迭代法，重复此句可提高精度
+    f = f * (1.5 - xHalf * f * f);
+    f = f * (1.5 - xHalf * f * f); // 三次迭代
+    return 1.0 / f;
+}
+
+int main() {
+    printf("Hello, World!\n");
+    printf("%d", mySqrt1(2147395599));
+    return 0;
+}

c_sharp/.gitignore

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+my_leetcode/.vs
+my_leetcode/bin
+my_leetcode/obj