用python写出几种如果一个列表中有一个元素出现两次,那么该列表即被判定为充分元素。编写程序判定列表中是否有重复元素,如有重复元素输出True,否则输出False,并将重复元素及其重复次数保存在字典中。
时间: 2024-05-12 15:14:35 浏览: 150
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以下是两种实现方法:
方法一:
```python
def check_duplicate(lst):
"""
检查列表中是否有重复元素
"""
counter = {}
for item in lst:
if item not in counter:
counter[item] = 1
else:
counter[item] += 1
return True, counter
return False, counter
# 示例
lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50]
has_duplicate, counter = check_duplicate(lst)
print(has_duplicate) # True
print(counter) # {1: 1, 2: 1, 3: 1, 4: 1, 5: 1, 6: 1, 7: 1, 8: 1, 9: 1, 10: 1, 11: 1, 12: 1, 13: 1, 14: 1, 15: 1, 16: 1, 17: 1, 18: 1, 19: 1, 20: 1, 21: 1, 22: 1, 23: 1, 24: 1, 25: 1, 26: 1, 27: 1, 28: 1, 29: 1, 30: 1, 31: 1, 32: 1, 33: 1, 34: 1, 35: 1, 36: 1, 37: 1, 38: 1, 39: 1, 40: 1, 41: 1, 42: 1, 43: 1, 44: 1, 45: 1, 46: 1, 47: 1, 48: 1, 49: 1, 50: 2}
```
方法二:
```python
def check_duplicate(lst):
"""
检查列表中是否有重复元素
"""
counter = {}
for item in lst:
counter[item] = counter.get(item, 0) + 1
for item, count in counter.items():
if count > 1:
return True, counter
return False, counter
# 示例
lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50]
has_duplicate, counter = check_duplicate(lst)
print(has_duplicate) # True
print(counter) # {1: 1, 2: 1, 3: 1, 4: 1, 5: 1, 6: 1, 7: 1, 8: 1, 9: 1, 10: 1, 11: 1, 12: 1, 13: 1, 14: 1, 15: 1, 16: 1, 17: 1, 18: 1, 19: 1, 20: 1, 21: 1, 22: 1, 23: 1, 24: 1, 25: 1, 26: 1, 27: 1, 28: 1, 29: 1, 30: 1, 31: 1, 32: 1, 33: 1, 34: 1, 35: 1, 36: 1, 37: 1, 38: 1, 39: 1, 40: 1, 41: 1, 42: 1, 43: 1, 44: 1, 45: 1, 46: 1, 47: 1, 48: 1, 49: 1, 50: 2}
```
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