If you add four spaces at the beginning of a line, Hacker News will treat it as preformatted. Here are you tables like such just for ease of reading. --- 1-ba

If you add four spaces at the beginning of a line, Hacker News will treat it as preformatted. Here are you tables like such just for ease of reading. --- 1-based first index of v1 in v2 is: | v1 | v2 | IndexOf(v1,v2) | |-------|-------------|----------------| | [] | [] | 1 | | aba | [] | N/A | | [] | aba | 1 | | a | a | 1 | | a | aba | 1 | | x | y | N/A | | world | hello world | 7 | 1-based last index of v1 in v2 is: | v1 | v2 | LastIndexOf(v1,v2) | |-------|-------------|--------------------| | [] | [] | 1 | | aba | [] | N/A | | [] | aba | 4 | | a | a | 1 | | a | aba | 3 | | x | y | N/A | | world | hello world | 7 |