diff --git a/codes/rust/chapter_array_and_linkedlist/array.rs b/codes/rust/chapter_array_and_linkedlist/array.rs
index a52d0db8..b4779874 100644
--- a/codes/rust/chapter_array_and_linkedlist/array.rs
+++ b/codes/rust/chapter_array_and_linkedlist/array.rs
@@ -4,10 +4,12 @@
  * Author: xBLACICEx (xBLACKICEx@outlook.com), sjinzh (sjinzh@gmail.com)
 */
 
+use rand::Rng;
+
 /* 随机返回一个数组元素 */
 fn random_access(nums: &[i32]) -> i32 {
     // 在区间 [0, nums.len()) 中随机抽取一个数字
-    let random_index = rand::random::<usize>() % nums.len();
+    let random_index = rand::thread_rng().gen_range(0..nums.len());
     // 获取并返回随机元素
     let random_num = nums[random_index];
     random_num
diff --git a/codes/zig/chapter_array_and_linkedlist/array.zig b/codes/zig/chapter_array_and_linkedlist/array.zig
index eebb4611..c70d6ec6 100644
--- a/codes/zig/chapter_array_and_linkedlist/array.zig
+++ b/codes/zig/chapter_array_and_linkedlist/array.zig
@@ -112,7 +112,6 @@ pub fn main() !void {
     var index = find(nums, 3);
     std.debug.print("\n在 nums 中查找元素 3 ，得到索引 = {}\n", .{index});
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_array_and_linkedlist/linked_list.zig b/codes/zig/chapter_array_and_linkedlist/linked_list.zig
index fbaa3f8d..f0b1a212 100644
--- a/codes/zig/chapter_array_and_linkedlist/linked_list.zig
+++ b/codes/zig/chapter_array_and_linkedlist/linked_list.zig
@@ -80,6 +80,5 @@ pub fn main() !void {
     var index = find(&n0, 2);
     std.debug.print("链表中值为 2 的结点的索引 = {}\n", .{index});
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
\ No newline at end of file
diff --git a/codes/zig/chapter_array_and_linkedlist/list.zig b/codes/zig/chapter_array_and_linkedlist/list.zig
index 32fab973..3e0f014a 100644
--- a/codes/zig/chapter_array_and_linkedlist/list.zig
+++ b/codes/zig/chapter_array_and_linkedlist/list.zig
@@ -74,7 +74,6 @@ pub fn main() !void {
     std.debug.print("\n排序列表后 list = ", .{});
     inc.PrintUtil.printList(i32, list);
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_array_and_linkedlist/my_list.zig b/codes/zig/chapter_array_and_linkedlist/my_list.zig
index 754852a1..4b2fa538 100644
--- a/codes/zig/chapter_array_and_linkedlist/my_list.zig
+++ b/codes/zig/chapter_array_and_linkedlist/my_list.zig
@@ -6,7 +6,6 @@ const std = @import("std");
 const inc = @import("include");
 
 // 列表类简易实现
-// 编译期泛型
 pub fn MyList(comptime T: type) type {
     return struct {
         const Self = @This();
@@ -171,7 +170,6 @@ pub fn main() !void {
     inc.PrintUtil.printArray(i32, try list.toArray());
     std.debug.print(" ，容量 = {} ，长度 = {}\n", .{list.capacity(), list.size()});
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_computational_complexity/space_complexity.zig b/codes/zig/chapter_computational_complexity/space_complexity.zig
index 9798821a..b301d5fa 100644
--- a/codes/zig/chapter_computational_complexity/space_complexity.zig
+++ b/codes/zig/chapter_computational_complexity/space_complexity.zig
@@ -120,6 +120,5 @@ pub fn main() !void {
     };
     try inc.PrintUtil.printTree(root, null, false);
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
\ No newline at end of file
diff --git a/codes/zig/chapter_hashing/array_hash_map.zig b/codes/zig/chapter_hashing/array_hash_map.zig
index b87b5313..af73bc21 100644
--- a/codes/zig/chapter_hashing/array_hash_map.zig
+++ b/codes/zig/chapter_hashing/array_hash_map.zig
@@ -158,6 +158,5 @@ pub fn main() !void {
     }
     value_set.deinit();
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
\ No newline at end of file
diff --git a/codes/zig/chapter_hashing/hash_map.zig b/codes/zig/chapter_hashing/hash_map.zig
index 1e217c43..d9dee1b8 100644
--- a/codes/zig/chapter_hashing/hash_map.zig
+++ b/codes/zig/chapter_hashing/hash_map.zig
@@ -49,7 +49,6 @@ pub fn main() !void {
         std.debug.print("{s}\n", .{kv.value_ptr.*});
     }
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_heap/heap.zig b/codes/zig/chapter_heap/heap.zig
index e2f215d0..0d4b5b44 100644
--- a/codes/zig/chapter_heap/heap.zig
+++ b/codes/zig/chapter_heap/heap.zig
@@ -76,6 +76,5 @@ pub fn main() !void {
     std.debug.print("\n输入列表并建立小顶堆后\n", .{});
     try inc.PrintUtil.printHeap(i32, mem_allocator, minHeap);
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
\ No newline at end of file
diff --git a/codes/zig/chapter_heap/my_heap.zig b/codes/zig/chapter_heap/my_heap.zig
index c74b1091..ff5c3847 100644
--- a/codes/zig/chapter_heap/my_heap.zig
+++ b/codes/zig/chapter_heap/my_heap.zig
@@ -6,7 +6,6 @@ const std = @import("std");
 const inc = @import("include");
 
 // 堆类简易实现
-// 编译期泛型
 pub fn MaxHeap(comptime T: type) type {
     return struct {
         const Self = @This();
@@ -181,10 +180,9 @@ pub fn main() !void {
     std.debug.print("\n堆元素数量为 {}", .{size});
 
     // 判断堆是否为空
-    var isEmpty = maxHeap.isEmpty();
-    std.debug.print("\n堆是否为空 {}\n", .{isEmpty});
+    var is_empty = maxHeap.isEmpty();
+    std.debug.print("\n堆是否为空 {}\n", .{is_empty});
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_searching/linear_search.zig b/codes/zig/chapter_searching/linear_search.zig
index 3ba21313..1f4c84fa 100644
--- a/codes/zig/chapter_searching/linear_search.zig
+++ b/codes/zig/chapter_searching/linear_search.zig
@@ -50,7 +50,6 @@ pub fn main() !void {
     std.debug.print("目标结点值 3 的对应结点对象为 ", .{});
     try inc.PrintUtil.printLinkedList(i32, node);
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_sorting/bubble_sort.zig b/codes/zig/chapter_sorting/bubble_sort.zig
index 17cb0d97..3a2a922e 100644
--- a/codes/zig/chapter_sorting/bubble_sort.zig
+++ b/codes/zig/chapter_sorting/bubble_sort.zig
@@ -56,7 +56,6 @@ pub fn main() !void {
     std.debug.print("\n冒泡排序完成后 nums1 = ", .{});
     inc.PrintUtil.printArray(i32, &nums1);
     
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_sorting/insertion_sort.zig b/codes/zig/chapter_sorting/insertion_sort.zig
index 5c954791..b0f0fa84 100644
--- a/codes/zig/chapter_sorting/insertion_sort.zig
+++ b/codes/zig/chapter_sorting/insertion_sort.zig
@@ -27,7 +27,6 @@ pub fn main() !void {
     std.debug.print("插入排序完成后 nums = ", .{});
     inc.PrintUtil.printArray(i32, &nums);
     
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_stack_and_queue/array_queue.zig b/codes/zig/chapter_stack_and_queue/array_queue.zig
index 8a3938f9..79f7116a 100644
--- a/codes/zig/chapter_stack_and_queue/array_queue.zig
+++ b/codes/zig/chapter_stack_and_queue/array_queue.zig
@@ -124,8 +124,8 @@ pub fn main() !void {
     std.debug.print("\n队列长度 size = {}", .{size});
 
     // 判断队列是否为空
-    var isEmpty = queue.isEmpty();
-    std.debug.print("\n队列是否为空 = {}", .{isEmpty});
+    var is_empty = queue.isEmpty();
+    std.debug.print("\n队列是否为空 = {}", .{is_empty});
 
     // 测试环形数组
     var i: i32 = 0;
diff --git a/codes/zig/chapter_stack_and_queue/array_stack.zig b/codes/zig/chapter_stack_and_queue/array_stack.zig
index 36b1c7ca..0c6d25a0 100644
--- a/codes/zig/chapter_stack_and_queue/array_stack.zig
+++ b/codes/zig/chapter_stack_and_queue/array_stack.zig
@@ -6,7 +6,6 @@ const std = @import("std");
 const inc = @import("include");
 
 // 基于数组实现的栈
-// 编译期泛型
 pub fn ArrayStack(comptime T: type) type {
     return struct {
         const Self = @This();
@@ -78,11 +77,11 @@ pub fn main() !void {
     inc.PrintUtil.printList(i32, stack.toList());
 
     // 访问栈顶元素
-    var top = stack.top();
-    std.debug.print("\n栈顶元素 top = {}", .{top});
+    var peek = stack.top();
+    std.debug.print("\n栈顶元素 peek = {}", .{peek});
 
     // 元素出栈
-    top = stack.pop();
+    var top = stack.pop();
     std.debug.print("\n出栈元素 pop = {}，出栈后 stack = ", .{top});
     inc.PrintUtil.printList(i32, stack.toList());
 
@@ -91,9 +90,8 @@ pub fn main() !void {
     std.debug.print("\n栈的长度 size = {}", .{size});
 
     // 判断栈是否为空
-    var empty = stack.empty();
-    std.debug.print("\n栈是否为空 = {}", .{empty});
+    var is_empty = stack.empty();
+    std.debug.print("\n栈是否为空 = {}", .{is_empty});
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
diff --git a/codes/zig/chapter_stack_and_queue/deque.zig b/codes/zig/chapter_stack_and_queue/deque.zig
index 1e617148..0b4bd374 100644
--- a/codes/zig/chapter_stack_and_queue/deque.zig
+++ b/codes/zig/chapter_stack_and_queue/deque.zig
@@ -44,8 +44,8 @@ pub fn main() !void {
     std.debug.print("\n双向队列长度 size = {}", .{size});
 
     // 判断双向队列是否为空
-    var isEmpty = if (deque.len == 0) true else false;
-    std.debug.print("\n双向队列是否为空 = {}", .{isEmpty});
+    var is_empty = if (deque.len == 0) true else false;
+    std.debug.print("\n双向队列是否为空 = {}", .{is_empty});
 
     _ = try std.io.getStdIn().reader().readByte();
 }
diff --git a/codes/zig/chapter_stack_and_queue/linkedlist_deque.zig b/codes/zig/chapter_stack_and_queue/linkedlist_deque.zig
index 3fe6c5b0..b86e0c79 100644
--- a/codes/zig/chapter_stack_and_queue/linkedlist_deque.zig
+++ b/codes/zig/chapter_stack_and_queue/linkedlist_deque.zig
@@ -222,8 +222,8 @@ pub fn main() !void {
     std.debug.print("\n队列长度 size = {}", .{size});
 
     // 判断双向队列是否为空
-    var isEmpty = deque.isEmpty();
-    std.debug.print("\n双向队列是否为空 = {}", .{isEmpty});
+    var is_empty = deque.isEmpty();
+    std.debug.print("\n双向队列是否为空 = {}", .{is_empty});
 
     _ = try std.io.getStdIn().reader().readByte();
 }
diff --git a/codes/zig/chapter_stack_and_queue/linkedlist_queue.zig b/codes/zig/chapter_stack_and_queue/linkedlist_queue.zig
index ea8735e6..a5b66d0b 100644
--- a/codes/zig/chapter_stack_and_queue/linkedlist_queue.zig
+++ b/codes/zig/chapter_stack_and_queue/linkedlist_queue.zig
@@ -120,8 +120,8 @@ pub fn main() !void {
     std.debug.print("\n队列长度 size = {}", .{size});
 
     // 判断队列是否为空
-    var isEmpty = queue.isEmpty();
-    std.debug.print("\n队列是否为空 = {}", .{isEmpty});
+    var is_empty = queue.isEmpty();
+    std.debug.print("\n队列是否为空 = {}", .{is_empty});
 
     _ = try std.io.getStdIn().reader().readByte();
 }
diff --git a/codes/zig/chapter_stack_and_queue/linkedlist_stack.zig b/codes/zig/chapter_stack_and_queue/linkedlist_stack.zig
index 633583b4..38defc1b 100644
--- a/codes/zig/chapter_stack_and_queue/linkedlist_stack.zig
+++ b/codes/zig/chapter_stack_and_queue/linkedlist_stack.zig
@@ -6,7 +6,6 @@ const std = @import("std");
 const inc = @import("include");
 
 // 基于链表实现的栈
-// 编译期泛型
 pub fn LinkedListStack(comptime T: type) type {
     return struct {
         const Self = @This();
@@ -111,10 +110,9 @@ pub fn main() !void {
     std.debug.print("\n栈的长度 size = {}", .{size});
 
     // 判断栈是否为空
-    var empty = stack.empty();
-    std.debug.print("\n栈是否为空 = {}", .{empty});
+    var is_empty = stack.empty();
+    std.debug.print("\n栈是否为空 = {}", .{is_empty});
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_stack_and_queue/queue.zig b/codes/zig/chapter_stack_and_queue/queue.zig
index 011b3618..ce5b9c09 100644
--- a/codes/zig/chapter_stack_and_queue/queue.zig
+++ b/codes/zig/chapter_stack_and_queue/queue.zig
@@ -39,8 +39,8 @@ pub fn main() !void {
     std.debug.print("\n队列长度 size = {}", .{size});
 
     // 判断队列是否为空
-    var empty = if (queue.len == 0) true else false;
-    std.debug.print("\n队列是否为空 = {}", .{empty});
+    var is_empty = if (queue.len == 0) true else false;
+    std.debug.print("\n队列是否为空 = {}", .{is_empty});
 
     _ = try std.io.getStdIn().reader().readByte();
 }
diff --git a/codes/zig/chapter_stack_and_queue/stack.zig b/codes/zig/chapter_stack_and_queue/stack.zig
index fd1d2b2d..9bd076e9 100644
--- a/codes/zig/chapter_stack_and_queue/stack.zig
+++ b/codes/zig/chapter_stack_and_queue/stack.zig
@@ -39,6 +39,5 @@ pub fn main() !void {
     var empty = if (stack.items.len == 0) true else false;
     std.debug.print("\n栈是否为空 = {}", .{empty});
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
diff --git a/codes/zig/chapter_tree/binary_tree.zig b/codes/zig/chapter_tree/binary_tree.zig
index b2cb9a96..f193543c 100644
--- a/codes/zig/chapter_tree/binary_tree.zig
+++ b/codes/zig/chapter_tree/binary_tree.zig
@@ -34,7 +34,6 @@ pub fn main() !void {
     std.debug.print("删除结点 P 后\n", .{});
     try inc.PrintUtil.printTree(&n1, null, false);
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
 
diff --git a/codes/zig/chapter_tree/binary_tree_bfs.zig b/codes/zig/chapter_tree/binary_tree_bfs.zig
index 4fb94d94..56c1d8ab 100644
--- a/codes/zig/chapter_tree/binary_tree_bfs.zig
+++ b/codes/zig/chapter_tree/binary_tree_bfs.zig
@@ -53,6 +53,5 @@ pub fn main() !void {
     std.debug.print("\n层序遍历的结点打印序列 = ", .{});
     inc.PrintUtil.printList(i32, list);
 
-    const getchar = try std.io.getStdIn().reader().readByte();
-    _ = getchar;
+    _ = try std.io.getStdIn().reader().readByte();
 }
\ No newline at end of file
diff --git a/codes/zig/include/ListNode.zig b/codes/zig/include/ListNode.zig
index 19ece117..6c3030af 100644
--- a/codes/zig/include/ListNode.zig
+++ b/codes/zig/include/ListNode.zig
@@ -5,7 +5,6 @@
 const std = @import("std");
 
 // Definition for a singly-linked list node
-// 编译期泛型
 pub fn ListNode(comptime T: type) type {
     return struct {
         const Self = @This();
diff --git a/codes/zig/include/PrintUtil.zig b/codes/zig/include/PrintUtil.zig
index 24152ffd..ac52e557 100644
--- a/codes/zig/include/PrintUtil.zig
+++ b/codes/zig/include/PrintUtil.zig
@@ -60,7 +60,7 @@ pub fn printQueue(comptime T: type, queue: std.TailQueue(T)) void {
     }
 }
 
-// Print a HashMap
+// Print a hash map
 pub fn printHashMap(comptime TKey: type, comptime TValue: type, map: std.AutoHashMap(TKey, TValue)) void {
     var it = map.iterator();
     while (it.next()) |kv| {
diff --git a/codes/zig/include/TreeNode.zig b/codes/zig/include/TreeNode.zig
index 08e0ce64..fc31ec36 100644
--- a/codes/zig/include/TreeNode.zig
+++ b/codes/zig/include/TreeNode.zig
@@ -5,7 +5,6 @@
 const std = @import("std");
 
 // Definition for a binary tree node
-// 编译期泛型
 pub fn TreeNode(comptime T: type) type {
     return struct {
         const Self = @This();