I wish it was possible to lable/tag my submissions. I resolve a problem with diffrent approaches for ex. to reverse a string it's possible to do:
Approace 1: revese in-place(no buffer usage)
Approace 2: do recursively by putting first char to end
Approace 3: do a while-loop by putting first char to end
Approace 4: using two pointers
Approace 5: using Stack
Approace 6: using library function: toCharArray or StringBuilder reverse

after submitting each approach tag them like this (but prettier than this)