numpy.where函数可以直接返回满足条件的元素的索引。 importnumpyasnpdeffind_element_in_numpy_array(arr,target):indices=np.where(arr==target)[0]returnindices# 示例my_array=np.array([1,2,3,4,5])target=3indices=find_element_in_numpy_array(my_array,target)print(f"元素{target}在NumPy数组中的索...
# 定义一个数组my_array=[1,2,3,4,5]# 要查找的元素element_to_find=3# 查找并打印结果ifelement_to_findinmy_array:print(f"{element_to_find}存在于数组中")else:print(f"{element_to_find}不存在于数组中") 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 在这个例子中,程序首先定义了一个...
def contains_apple(element): return 'apple' in element # 使用filter()函数进行筛选 filtered_array = list(filter(contains_apple, array)) print("筛选后的数组:") print(filtered_array) ``` 3. 使用NumPy库进行筛选 如果数组是由NumPy库创建的,我们可以使用NumPy的向量化操作来进行元素级的筛选。以下是一...
find(match, namespaces=None):从根元素开始匹配和 Element.find()作用一样。 findall(match, namespaces=None):从根元素开始匹配和 Element.findall()作用一样。 findtext(match, default=None, namespaces=None):从根元素开始匹配和 Element.findtext()作用一样。 getiterator(tag=None):Python3.2后使用 ElementTr...
Find the minimum element. You may assume no duplicate exists in the array. 代码:oj测试通过 Runtime: 52 ms 1classSolution:2#@param num, a list of integer3#@return an integer4deffindMin(self, num):5#none case6ifnumisNone:7returnNone8#short lenght case9iflen(num)==1:10returnnum[0]...
try:time.sleep(3)js="window.scrollTo(0,100000)"driver.execute_script(js)whiledriver.find_element_by_xpath("//div[@class='lbf-pagination']/ul/li[last()]/a"):driver.find_element_by_xpath("//div[@class='lbf-pagination']/ul/li[last()]/a").click()time.sleep(3)getFiction()print(...
For example, in array[1, 2, 3, 1], 3 is a peak element and your function should return the index number 2. 代码: 分别用递归和非递归两种方法实现。 非递归版代码:oj测试通过 Runtime: 55 ms 1classSolution:2#@param num, a list of integer3#@return an integer4deffindPeakElement(self, ...
array([[1, 2, 3], [4, 5, 6]])导入：sht_2.range('F1').value=obj 将excel中数据导...
Lomuto partition scheme :This scheme is attributed to Nico Lomuto. In most formulations this scheme chooses as the pivot the last element in the array. The algorithm maintains index i as it scans the array using another index j such that the elements at lo through i-1 (inclusive) are less...
You refer to an array element by referring to theindex number. Example Get the value of the first array item: x = cars[0] Try it Yourself » Example Modify the value of the first array item: cars[0] ="Toyota" Try it Yourself » ...