python瀛︿範--bisect妯″潡
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鏍囩锛?a href='http://www.mamicode.com/so/1/%e8%bf%94%e5%9b%9e' title='杩斿洖'>杩斿洖
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1. bisect妯″潡涓哄唴缃爣鍑嗗簱锛屽畠瀹炵幇浜嗕簩鍒嗘硶鏌ユ壘绠楁硶(鍙鎻愬埌浜屽垎娉曟煡鎵撅紝搴旇浼樺厛鎯冲埌姝ゆā鍧?/strong>)
2. 涓昏鍖呭惈鏈変袱涓嚱鏁帮細bisect鍑芥暟(鏌ユ壘鍏冪礌)鍜宨nsort鍑芥暟(鎻掑叆鍏冪礌)銆?/p>
2. 甯哥敤鏂规硶浠嬬粛
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import bisect # 宸茬煡涓€涓湁搴忓簭鍒?/span> ordered_list = [23, 34, 59, 78, 99] des_element = 21 res = bisect.bisect(ordered_list, des_element) print(res) # res: 0 des_element = 35 res = bisect.bisect(ordered_list, des_element) print(res) # res: 2
璇存槑锛歜isect鍑芥暟浼氶粯璁よ繑鍥炲彸渚х殑浣嶇疆绱㈠紩锛屽悓鏃禸isect鍑芥暟鏄痓isect_right鍑芥暟鐨勫埆鍚嶃€?/p>
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import bisect # 宸茬煡涓€涓湁搴忓簭鍒?/span> ordered_list = [23, 34, 34, 59, 78, 99] # bisect鍑芥暟榛樿杩斿洖鍙充晶鐨勪綅缃储寮?/span> des_element = 34 res = bisect.bisect(ordered_list, des_element) print(res) # res: 3 # bisect鍑芥暟涓篵isect_right鍑芥暟鐨勫埆鍚?/span> des_element = 34 res = bisect.bisect_right(ordered_list, des_element) print(res) # res: 3 # bisect_left鍑芥暟榛樿杩斿洖宸︿晶鐨勪綅缃储寮?/span> des_element = 34 res = bisect.bisect_left(ordered_list, des_element) print(res) # res: 1
璇存槑锛氬鏋滅洰鏍囧厓绱犱細鍦ㄥ凡鐭ユ湁搴忓垪琛ㄤ腑澶氭鍑虹幇锛岄偅涔堢洰鏍囧厓绱犱粠宸茬煡鏈夊簭鍒楄〃鐨勫乏渚ф垨鍙充晶鎻掑叆鏃剁粨鏋滄槸涓嶅悓鐨勩€?/p>
3. 鍦烘櫙搴旂敤
鍦烘櫙1锛氭浛浠f-elif璇彞锛屼緥濡傦細鍒ゆ柇鑰冪敓鎴愮哗鎵€灞炵殑绛夌骇闂銆?/p>
鈥樷€樷€?/span>
鑰冭瘯鎴愮哗鐨勬。浣嶅垝鍒嗭紝鍏卞垎涓?涓瓑绾э細
1. F绛夌骇锛歔0, 60)
2. D绛夌骇锛歔60, 70)
3. C绛夌骇锛歔70, 80)
4. B绛夌骇锛歔80, 90)
5. A绛夌骇锛歔90, 100]
鈥樷€樷€?/span>
import bisect
def get_result(score: (int, float), score_nodes: list = [60, 70, 80, 90], ranks=鈥?/span>FDCBA鈥?/span>) -> str:
# 鏍￠獙锛氬垎鏁拌寖鍥?/span>
if score < 0 or score >100:
return "score鐨勫彇鍊艰寖鍥达細0-100"
# 杈圭晫鐐硅€冭檻
if int(score) == 100:
return "A"
loc_index = bisect.bisect(score_nodes, score)
return ranks[loc_index]
print(get_result(50)) # res: F
print(get_result(60)) # res: D
print(get_result(85.5)) # res: B
print(get_result(100)) # res: A
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