用循环首次适应算法改写代码class MemoryManager: def init(self, allocator): self.allocator = allocator def allocate(self, process, request_size): memory_view = self.allocator.memory_view() best_fit_block = None best_fit_size = float('inf') for i in range(len(memory_view)): if memory_view[i] is None: block_size = 0 j = i while j < len(memory_view) and memory_view[j] is None: block_size += 1 j += 1 if block_size >= request_size and block_size < best_fit_size: best_fit_block = i best_fit_size = block_size if best_fit_block is not None: block_start = best_fit_block self.allocator.allocate_memory(block_start, request_size, process) else: raise AssertionError('allocation failed')

以下是使用循环首次适应算法改写的代码：

class MemoryManager:
    def __init__(self, allocator):
        self.allocator = allocator
    
    def allocate(self, process, request_size):
        memory_view = self.allocator.memory_view()
        block_start = None
        block_size = 0
        for i in range(len(memory_view)):
            if memory_view[i] is None:
                if block_start is None:
                    block_start = i
                block_size += 1
                if block_size == request_size:
                    self.allocator.allocate_memory(block_start, request_size, process)
                    return
            else:
                block_start = None
                block_size = 0
        
        raise AssertionError('allocation failed')

这个类只有一个方法`allocate`，使用循环首次适应算法分配内存块。如果成功分配，则调用`self.allocator.allocate_memory`将分配的内存块信息传递给分配器。如果分配失败，则触发异常。