Balanced brackets: Difference between revisions

<lang d>import std.stdio, std.algorithm, std.string, std.random;

returnauto text(map!((i){r return= "[]"[uniform(0,2)]; })(iota.repeat(n))).dup;

foreach (i; 0 .. 149) {

writefln("%-15s16s is%s balanced", '"' ~ s ~ '"',

s.balancedParens('[', ']') ? "OK" : " notbad");

<pre>"" is balanced OK

"["] is not balancedOK

"][" []] is not balancedOK

"[]]" [[][ is not balancedbad

"]][[][" [] is not balancedbad

"[[[][]][]" ] is not balancedOK

"[[]][[][]][" ] is not balancedOK

"[]]]][[[[[]" ]][ is not balancedbad

"[[[[][[]][][]]][]" is not balancedOK</pre>