classSolution:defdeleteDuplication(self, pHead):#write code hereifnotpHeadornotpHead.next:#如果链表为空或只有一个元素,直接返回returnpHeadifpHead.val==pHead.next.val:#如果当前结点与下一结点重复,继续查找是否还有重复的p=pHead.next.nextwhilepandp.val==pHead.val:#如果p结点不为空且其值与当前重...
jinlist_1:sht_3[int(i),int(j)].color=(255,25,0)f()list_1=[]foriinrange(30):forjinr...
import tkinter as tkfrom tkinter import messageboxdef add_task():task = entry.get()if task:tasks_listbox.insert(tk.END, task)entry.delete(0, tk.END)else:messagebox.showwarning("Warning", "Please enter a task.")def delete_task():selected_task = tasks_listbox.curselection()if selected_ta...
for what n do we know the factorial? n = 1:if n == 1: return 1 how to reduce problem? Rewrite in term of something simpler to reach base case n*(n-1)!else: return n*factorial (n-1) 完整代码: def fact(n): if n == 1: return 1 else: return n*fact(n-1)print (fact(...
list= [1,2,3,4,5,6,7,8]forxinlist:print(x) 这将循环遍历所有元素并将它们打印出来。 有用的列表方法如下: .append(value): 这将在列表末尾添加一个元素 .count('x'): 这将获取列表中'x'的数量 .index('x'): 这将返回列表中'x'的索引 ...
(0,".")) Entry(self).grid(row=0,column=0,columnspan=4,pady=10) for rindex,r in enumerate(btnText): for cindex,c in enumerate(r): if c == "=": Button(self,text=c,width=2).grid(row=rindex+1,column=cindex,rowspan=2,sticky=NSEW) elif c == 0: Button(self,text=c,width...
for item in list_items: lb.insert('end', item) # 从最后一个位置开始加入值 lb.insert(1, 'first') # 在第一个位置加入'first'字符 lb.insert(2, 'second') # 在第二个位置加入'second'字符 lb.delete(2)# 删除第二个位置的字符 lb.pack() ...
We will write a Python program to read through the lines of the file, break each line into a list of words, and then loop through each of the words in the line and count each word using a dictionary. You will see that we have twoforloops. The outer loop is reading the lines of ...
使用loop.run_in_executor(executor,函数,参数)包装成一个多线程,然后放入到一个task列表中,通过wait(task列表)来运行 通过asyncio实现http reader,writer=awaitasyncio.open_connection(host,port)writer.writer()发送请求asyncfordatainreader:data=data.decode("utf-8")list.append(data)然后list中存储的就是htmlas...
entry.strictlyReaches(b1)and entry.strictlyReaches(b2))select b1,b2 This typically gives a very large number of results, because it is a common occurrence in normal control flow. It is, however, an example of the sort of control-flow analysis that is possible. Control-flow analyses such as...