小能豆
阅读 93
2025-01-26
根据字符串在列表中的位置，将不同的字符串附加到字符串列表中
javascript给出以下配置列表
['configuration1A', 'configuration1B', 'configuration1C', 'configuration2A', 'configuration2B', 'configuration2C', 'configuration3A', 'configuration3B', 'configuration3C', 'configuration4A', 'configuration4B', 'configuration4C', 'configuration5A', 'configuration5B', 'configuration5C', 'configuration6A', 'configuration6B', 'configuration6C', 'configuration7A', 'configuration7B', 'configuration7C', 'configuration8A', 'configuration8B', 'configuration8C', 'configuration9A', 'configuration9B', 'configuration9C', 'configuration10A', 'configuration10B', 'configuration10C', 'configuration11A', 'configuration11B', 'configuration11C', 'configuration12A', 'configuration12B', 'configuration12C', 'configuration13A', 'configuration13B', 'configuration13C', 'configuration14A', 'configuration14B', 'configuration14C', 'configuration15A', 'configuration15B', 'configuration15C', 'configuration16A', 'configuration16B', 'configuration16C', 'configuration17A', 'configuration17B', 'configuration17C', 'configuration18A', 'configuration18B', 'configuration18C', 'configuration19A', 'configuration19B', 'configuration19C', 'configuration20A', 'configuration20B', 'configuration20C', 'configuration21A', 'configuration21B', 'configuration21C', 'configuration22A', 'configuration22B', 'configuration22C', 'configuration23A', 'configuration23B', 'configuration23C', 'configuration24A', 'configuration24B', 'configuration24C', 'configuration25A', 'configuration25B', 'configuration25C', 'configuration1A', 'configuration1B', 'configuration1C', 'configuration2A', 'configuration2B', 'configuration2C', 'configuration3A', 'configuration3B', 'configuration3C', 'configuration4A', 'configuration4B', 'configuration4C', 'configuration5A', 'configuration5B', 'configuration5C', 'configuration6A', 'configuration6B', 'configuration6C', 'configuration7A', 'configuration7B', 'configuration7C', 'configuration8A', 'configuration8B', 'configuration8C', 'configuration9A', 'configuration9B', 'configuration9C', 'configuration10A', 'configuration10B', 'configuration10C', 'configuration11A', 'configuration11B', 'configuration11C', 'configuration12A', 'configuration12B', 'configuration12C', 'configuration13A', 'configuration13B', 'configuration13C', 'configuration14A', 'configuration14B', 'configuration14C', 'configuration15A', 'configuration15B', 'configuration15C', 'configuration16A', 'configuration16B', 'configuration16C', 'configuration17A', 'configuration17B', 'configuration17C', 'configuration18A', 'configuration18B', 'configuration18C', 'configuration19A', 'configuration19B', 'configuration19C', 'configuration20A', 'configuration20B', 'configuration20C', 'configuration21A', 'configuration21B', 'configuration21C', 'configuration22A', 'configuration22B', 'configuration22C', 'configuration23A', 'configuration23B', 'configuration23C', 'configuration24A', 'configuration24B', 'configuration24C', 'configuration25A', 'configuration25B', 'configuration25C', 'configuration1A', 'configuration1B', 'configuration1C', 'configuration2A', 'configuration2B', 'configuration2C', 'configuration3A', 'configuration3B', 'configuration3C', 'configuration4A', 'configuration4B', 'configuration4C', 'configuration5A', 'configuration5B', 'configuration5C', 'configuration6A', 'configuration6B', 'configuration6C', 'configuration7A', 'configuration7B', 'configuration7C', 'configuration8A', 'configuration8B', 'configuration8C', 'configuration9A', 'configuration9B', 'configuration9C', 'configuration10A', 'configuration10B', 'configuration10C', 'configuration11A', 'configuration11B', 'configuration11C', 'configuration12A', 'configuration12B', 'configuration12C', 'configuration13A', 'configuration13B', 'configuration13C', 'configuration14A', 'configuration14B', 'configuration14C', 'configuration15A', 'configuration15B', 'configuration15C', 'configuration16A', 'configuration16B', 'configuration16C', 'configuration17A', 'configuration17B', 'configuration17C', 'configuration18A', 'configuration18B', 'configuration18C', 'configuration19A', 'configuration19B', 'configuration19C', 'configuration20A', 'configuration20B', 'configuration20C', 'configuration21A', 'configuration21B', 'configuration21C', 'configuration22A', 'configuration22B', 'configuration22C', 'configuration23A', 'configuration23B', 'configuration23C', 'configuration24A', 'configuration24B', 'configuration24C', 'configuration25A', 'configuration25B', 'configuration25C']
如何在每个元素（字符串）的末尾附加一个具有特定约束的字符串：
• 将 string=”1” 添加到前 75 个元素（configuration1A1，依此类推）
• 将 string=”2” 添加到接下来的 75 个元素（configuration1A2，依此类推）
• 将 string=”3” 添加到最后 75 个元素（configuration1A3，依此类推）
为了在字符串末尾添加字符串，可以执行以下操作
config_numb="1"
configurations_new = [x + config_numb for i in configurations_v1]
到目前为止，我有以下内容
count = 0
for x in configurations_v1:
if count < 75:
#print(x)
config_numb="1"
configurations_new = [x + config_numb for i in configurations_v1]
pass
elif count >= 75 and count < 150:
#print(x)
config_numb="2"
configurations_new = [x + config_numb for i in configurations_v1]
pass
elif count >= 150:
#print(x)
config_numb="3"
configurations_new = [x + config_numb for i in configurations_v1]
pass
count += 1
但是，这是创建一个具有所需 len() 的列表，但是，配置列表中的所有元素并非都与其各自的元素config_numb位于末尾，而是每个元素都是configuration25C3。
['configuration25C3', 'configuration25C3', 'configuration25C3', 'configura
阅读 93
2025-01-26
共1个答案
小能豆
这里的问题是列表推导式遍历整个可迭代对象并创建一个新列表，您可以向值添加条件，但实际上，仅仅进行迭代可能更容易让人理解，另外需要注意的一点是字符串是不可变的，即当您说修改时，实际上是在创建一个新字符串。试试这个：
configurations_new = configurations_v1.copy()
for index, value in enumerate(configurations_v1):
if index < 75:
configurations_new[index] = configurations_new[index] + '1'
elif index < 150:
configurations_new[index] = configurations_new[index] + '2'
else:
configurations_new[index] = configurations_new[index] + '3'
使用列表推导式编写的结果为：
configurations_new = [i + '1' if index < 75 else i + '2' if index < 150 else i + '3' for index, i in enumerate(configurations_v1)]
2025-01-26