June 2018 Update

This commit is contained in:
Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions

View file

@ -0,0 +1,12 @@
mata
function random_brackets(n) {
return(invtokens(("[","]")[runiformint(1,2*n,1,2)],""))
}
function is_balanced(s) {
n = strlen(s)
if (n==0) return(1)
a = runningsum(92:-ascii(s))
return(all(a:>=0) & a[n]==0)
}
end