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krahets
2023-06-25 21:11:35 +08:00
parent 5bc8df6d5d
commit e4e6cd6bae
19 changed files with 836 additions and 105 deletions
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chapter_stack_and_queue/queue.md
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@@ -941,11 +941,11 @@ comments: true
front: ?*inc.ListNode(T) = null, // 头节点 front
rear: ?*inc.ListNode(T) = null, // 尾节点 rear
que_size: usize = 0, // 队列的长度
que_size: usize = 0, // 队列的长度
mem_arena: ?std.heap.ArenaAllocator = null,
mem_allocator: std.mem.Allocator = undefined, // 内存分配器
// 构造方法（分配内存+初始化队列）
// 构造函数（分配内存+初始化队列）
pub fn init(self: *Self, allocator: std.mem.Allocator) !void {
if (self.mem_arena == null) {
self.mem_arena = std.heap.ArenaAllocator.init(allocator);
@@ -956,7 +956,7 @@ comments: true
self.que_size = 0;
}
// 析构方法（释放内存）
// 析构函数（释放内存）
pub fn deinit(self: *Self) void {
if (self.mem_arena == null) return;
self.mem_arena.?.deinit();
@@ -1008,7 +1008,7 @@ comments: true
pub fn toArray(self: *Self) ![]T {
var node = self.front;
var res = try self.mem_allocator.alloc(T, self.size());
std.mem.set(T, res, @as(T, 0));
@memset(res, @as(T, 0));
var i: usize = 0;
while (i < res.len) : (i += 1) {
res[i] = node.?.val;
@@ -1775,11 +1775,11 @@ comments: true
nums: []T = undefined, // 用于存储队列元素的数组
cap: usize = 0, // 队列容量
front: usize = 0, // 队首指针，指向队首元素
que_size: usize = 0, // 尾指针，指向队尾 + 1
queSize: usize = 0, // 尾指针，指向队尾 + 1
mem_arena: ?std.heap.ArenaAllocator = null,
mem_allocator: std.mem.Allocator = undefined, // 内存分配器
// 构造方法（分配内存+初始化数组）
// 构造函数（分配内存+初始化数组）
pub fn init(self: *Self, allocator: std.mem.Allocator, cap: usize) !void {
if (self.mem_arena == null) {
self.mem_arena = std.heap.ArenaAllocator.init(allocator);
@@ -1787,10 +1787,10 @@ comments: true
}
self.cap = cap;
self.nums = try self.mem_allocator.alloc(T, self.cap);
std.mem.set(T, self.nums, @as(T, 0));
@memset(self.nums, @as(T, 0));
}
// 析构方法（释放内存）
// 析构函数（释放内存）
pub fn deinit(self: *Self) void {
if (self.mem_arena == null) return;
self.mem_arena.?.deinit();
@@ -1803,12 +1803,12 @@ comments: true
// 获取队列的长度
pub fn size(self: *Self) usize {
return self.que_size;
return self.queSize;
}
// 判断队列是否为空
pub fn isEmpty(self: *Self) bool {
return self.que_size == 0;
return self.queSize == 0;
}
// 入队
@@ -1819,10 +1819,10 @@ comments: true
}
// 计算尾指针，指向队尾索引 + 1
// 通过取余操作，实现 rear 越过数组尾部后回到头部
var rear = (self.front + self.que_size) % self.capacity();
// 将 num 添加至队尾
var rear = (self.front + self.queSize) % self.capacity();
// 尾节点后添加 num
self.nums[rear] = num;
self.que_size += 1;
self.queSize += 1;
}
// 出队
@@ -1830,7 +1830,7 @@ comments: true
var num = self.peek();
// 队首指针向后移动一位，若越过尾部则返回到数组头部
self.front = (self.front + 1) % self.capacity();
self.que_size -= 1;
self.queSize -= 1;
return num;
}
@@ -1844,7 +1844,7 @@ comments: true
pub fn toArray(self: *Self) ![]T {
// 仅转换有效长度范围内的列表元素
var res = try self.mem_allocator.alloc(T, self.size());
std.mem.set(T, res, @as(T, 0));
@memset(res, @as(T, 0));
var i: usize = 0;
var j: usize = self.front;
while (i < self.size()) : ({ i += 1; j += 1; }) {