数据结构与算法考点初探:轻松掌握核心概念
鍦ㄦ瀯寤洪珮鏁堢▼搴忕殑鍩虹煶涓紝鏁版嵁缁撴瀯涓庣畻娉曡€冪偣鏃犵枒鏄叧閿墍鍦ㄣ€傛湰鏂囨棬鍦ㄦ繁鍏ユ帰璁ㄥ熀纭€鏁版嵁缁撴瀯鐨勫ゥ濡欎笌搴旂敤锛屽寘鎷暟缁勩€侀摼琛ㄣ€佹爤涓庨槦鍒楋紝浠ュ強鏍戜笌鍥剧殑鐗规€с€傛枃绔犱篃璇︾粏闃愯堪浜嗙畻娉曠殑鍩烘湰姒傚康锛屽寘鎷帶鍒剁粨鏋勫拰澶嶆潅搴﹀垎鏋愶紝骞剁壒鍒己璋冧簡鎺掑簭涓庢悳绱㈢畻娉曠殑閲嶈鎬с€傝鎴戜滑涓€鍚岃蛋杩涙暟鎹粨鏋勪笌绠楁硶鐨勫濡欎笘鐣岋紝鎺㈢储瀹冧滑鍦ㄥ疄闄呭簲鐢ㄤ腑鐨勬棤闄愬彲鑳姐€?/p>
鏁版嵁缁撴瀯鍩虹姒傝
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鏁扮粍涓庨摼琛ㄦ繁搴﹁В鏋?/p>
class Array:
def init(self, size):
self.size = size
self.data = [None] size
def insert(self, index, value):
if self.data[index] is None:
self.data[index] = value
else:
print("璇ョ储寮曞凡琚崰鐢?)
def print_array(self):
print(self.data)
class Node:
def init(self, value=None):
self.value = value
self.next = None
class LinkedList:
def init(self):
self.head = None
def insert_at_end(self, value):
new_node = Node(value)
if self.head is None:
self.head = new_node
else:
current = self.head
while current.next:
current = current.next
current.next = new_node
def print_list(self):
current = self.head
while current:
print(current.value)
current = current.next
闃熷垪涓庢暟鎹粨鏋勪笘鐣屾帰绱?/p>
闃熷垪姒傝堪
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鏍戜笌鍥惧垵鎺?/p>
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绠楁硶鍩虹鍙婃帶娴佺粨鏋?/p>
绠楁硶鏄竴绯诲垪瑙e喅闂鐨勬竻鏅版寚浠わ紝鍏锋湁绮剧‘鎬с€佹湁鏁堟€с€佹湁绌锋€у拰纭畾鎬с€傛帶鍒剁粨鏋勬槸绠楁硶璁捐鐨勬牳蹇冿紝涓昏鍖呮嫭涓夌绫诲瀷锛氶『搴忕粨鏋勩€侀€夋嫨缁撴瀯鍜屽惊鐜粨鏋勩€?/p>
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```python
def conditional_example(x):
if x > 0:
return "Positive"
elif x == 0:
return "Zero"
else:
return "Negative"
```
寰幆缁撴瀯鍏佽鐗瑰畾鐨勪唬鐮佸潡閲嶅鎵ц锛岀洿鍒版弧瓒虫煇涓潯浠躲€備緥濡傦細
```python
def loop_example():
for i in range(1, 11):
print(i)
```
绠楁硶澶嶆潅搴﹀垎鏋愬疄鎴?/p>
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```python
def fibonacci(n):
if n <= 1:
return n
else:
return fibonacci(n-1) + fibonacci(n-2)
def time_complexity(f):
n = 50
import time
start = time.time()
result = f(n)
end = time.time()
print(f"{f.__name__}鎵€鑰楄垂鐨勬椂闂翠负 {end - start} 绉?)
```
鎺掑簭涓庢悳绱㈢畻娉曡В鏋?/p>
```python
def binary_search(arr, target):
low, high = 0, len(arr) - 1
while low <= high:
mid = (low + high) // 2
if arr[mid] == target:
return mid
elif arr[mid] < target:
low = mid + 1
else:
high = mid - 1
return -1
```
---
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