Re: Challenge 1 – Triangle Font

[jfealy]

Another alternative

q)ts:10000 {x#'x} 1+til 100 
207 63616 
q)ts:10000 {sums[-1_t]_where t:til 1+x}100 
106 130112 
q){x#'x}[1+til 100]~{sums[-1_t]_where t:til 1+x}100 
1b

However, when applied to a large vector, performance drops off as cut is expensive

q)ts {x#'x} 1+til 50000 
4099 14763251840 
q)ts {sums[-1_t]_where t:til 1+x}50000 
6454 31943645248