找出列表y=[1,2,3,2,3,2,4,5,2,1,5,1,6,7,3,2,4,3,2]中元素为2的索引,并输出
时间: 2023-10-05 20:10:34 浏览: 51
你可以使用编程语言中的循环和条件判断来找出列表中元素为2的索引。下面是一个Python的示例代码:
```python
y = [1, 2, 3, 2, 3, 2, 4, 5, 2, 1, 5, 1, 6, 7, 3, 2, 4, 3, 2]
indexes = []
for i in range(len(y)):
if y[i == 2:
indexes.append(i)
print("元素为2的索引为:", indexes)
```
这段代码会输出列表中所有元素为2的索引。在这个例子中,列表y中元素为2的索引是1, 3, 5, 8, 15, 17。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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