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@@ -1562,9 +1562,9 @@ comments: true
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const Self = @This();
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nums: []T = undefined, // 数组(存储列表元素)
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numsCapacity: usize = 10, // 列表容量
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numSize: usize = 0, // 列表长度(即当前元素数量)
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extendRatio: usize = 2, // 每次列表扩容的倍数
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nums_capacity: usize = 10, // 列表容量
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num_size: usize = 0, // 列表长度(即当前元素数量)
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extend_ratio: usize = 2, // 每次列表扩容的倍数
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mem_arena: ?std.heap.ArenaAllocator = null,
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mem_allocator: std.mem.Allocator = undefined, // 内存分配器
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@@ -1574,7 +1574,7 @@ comments: true
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self.mem_arena = std.heap.ArenaAllocator.init(allocator);
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self.mem_allocator = self.mem_arena.?.allocator();
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}
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self.nums = try self.mem_allocator.alloc(T, self.numsCapacity);
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self.nums = try self.mem_allocator.alloc(T, self.nums_capacity);
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std.mem.set(T, self.nums, @as(T, 0));
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}
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@@ -1586,12 +1586,12 @@ comments: true
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// 获取列表长度(即当前元素数量)
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pub fn size(self: *Self) usize {
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return self.numSize;
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return self.num_size;
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}
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// 获取列表容量
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pub fn capacity(self: *Self) usize {
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return self.numsCapacity;
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return self.nums_capacity;
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}
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// 访问元素
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@@ -1614,7 +1614,7 @@ comments: true
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if (self.size() == self.capacity()) try self.extendCapacity();
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self.nums[self.size()] = num;
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// 更新元素数量
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self.numSize += 1;
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self.num_size += 1;
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}
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// 中间插入元素
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@@ -1629,7 +1629,7 @@ comments: true
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}
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self.nums[index] = num;
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// 更新元素数量
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self.numSize += 1;
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self.num_size += 1;
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}
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// 删除元素
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@@ -1642,22 +1642,22 @@ comments: true
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self.nums[j] = self.nums[j + 1];
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}
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// 更新元素数量
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self.numSize -= 1;
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self.num_size -= 1;
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// 返回被删除元素
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return num;
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}
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// 列表扩容
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pub fn extendCapacity(self: *Self) !void {
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// 新建一个长度为 size * extendRatio 的数组,并将原数组拷贝到新数组
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var newCapacity = self.capacity() * self.extendRatio;
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// 新建一个长度为 size * extend_ratio 的数组,并将原数组拷贝到新数组
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var newCapacity = self.capacity() * self.extend_ratio;
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var extend = try self.mem_allocator.alloc(T, newCapacity);
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std.mem.set(T, extend, @as(T, 0));
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// 将原数组中的所有元素复制到新数组
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std.mem.copy(T, extend, self.nums);
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self.nums = extend;
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// 更新列表容量
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self.numsCapacity = newCapacity;
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self.nums_capacity = newCapacity;
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}
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// 将列表转换为数组
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