anamaria

How do I remove the first seven 0s in this list (while keeping the rest of the 0s of course):

0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

removing-the-first-0s-in-a-list

ok, yes, zl slice works in this case, but what if he amount of 0s in the beginning is variable?

See the beginning of the list, remove all 0s until there is a non 0 value, keep the rest.

ok, yes, zl slice works in this case, but what if he amount of 0s in the beginning is variable? 

See the beginning of the list, remove all 0s until there is a non 0 value, keep the rest.


While this looks nice, I would recommend staying away from the recursion, this could even cause some stack overflow if you have a long list. A variation on jvkr's zl solution.

removing the first 0s in a list ...