Refine some details and coding style for Rust codes (#344)

* Refine some details and coding style for Rust codes

* Update coding style for Rust codes

* Update time_complexity.rs

* Update array.rs

* Update leetcode_two_sum.rs

* Update hash_map.rs

* Update file headers

* Update coding style for Rust codes and Zig codes

* Update coding style for Rust codes and Zig codes

---------

Co-authored-by: Yudong Jin <krahets@163.com>

codes/zig/chapter_stack_and_queue/array_stack.zig

@@ -31,13 +31,13 @@ pub fn ArrayStack(comptime T: type) type {
         }
 
         // 判断栈是否为空
-        pub fn empty(self: *Self) bool {
+        pub fn isEmpty(self: *Self) bool {
             return self.size() == 0;
         }
 
         // 访问栈顶元素
-        pub fn top(self: *Self) T {
-            if (self.size() == 0) @panic("栈为空");
+        pub fn peek(self: *Self) T {
+            if (self.isEmpty()) @panic("栈为空");
             return self.stack.?.items[self.size() - 1];
         }  
 
@@ -77,7 +77,7 @@ pub fn main() !void {
     inc.PrintUtil.printList(i32, stack.toList());
 
     // 访问栈顶元素
-    var peek = stack.top();
+    var peek = stack.peek();
     std.debug.print("\n栈顶元素 peek = {}", .{peek});
 
     // 元素出栈
@@ -90,7 +90,7 @@ pub fn main() !void {
     std.debug.print("\n栈的长度 size = {}", .{size});
 
     // 判断栈是否为空
-    var is_empty = stack.empty();
+    var is_empty = stack.isEmpty();
     std.debug.print("\n栈是否为空 = {}", .{is_empty});
 
     _ = try std.io.getStdIn().reader().readByte();