July 22, November 30 -- this week's special exercise -- search

Search is a common algorithm with wide coverage and accuracy across all regions.
All I know is blind search (= |), wide search, deep search, iterative deepening, binary search, three points, a *, string search, and so on.
Searching is often the basis of other algorithms. or other algorithms are often optimized by searching algorithms.
In addition, searching usually requires a certain amount of code, just to practice our coding.
This week, we will focus on the wide search and deep search, and find some preliminary and medium questions directly from OJ, and put them in this DIY project.
And the password whatsyourname.

Task requirements for this week:

1. At least seven steps are required for this week (the week that begins on Monday, November 30). If you have the right option, you can accept the plan before on January 1, December 6.
2. Do not post code, repeat the code you have done, or do not post code if the task cannot be completed.
3. You need to communicate with each other and have a good experience. If you have any other good search questions, please recommend them to everyone.

 

Join this week:

1241, 1253, 1010,
1372, 1026, 1254,
1180, 1043, 1044,
1401, 1072, 1226,
1067, 1271, 1429,
1732, 1518