Day 5 - some improvements

[narimiran]

At line 36, you're using multiReplace twice:

let data = input.multiReplace(($x, "")).multiReplace(($(char(ord(x)-32)), ""))

You can simplify (and probably slightly improve speed) it by using just one of them:

let data = input.multiReplace(($x, ""), ($(char(ord(x)-32)), ""))

But, since you already return a string from solve1, much bigger speed improvement can be achieved by re-using that shortened string:

let shortened = solve1(input)
echo shortened.len
echo solve2(shortened)

(After that, if you want even faster solution, I wouldn't directly modify data by using delete in solve1 — that's quite expensive)

[tradfursten]

@narimiran Thanks for the comment! I am in the process of learning Nim and suggestions like this is welcome.