func has_close_element:bool nums:[]num threshold:num
    for i := range (len nums)
        for j := range (i + 1) (len nums)
            if (abs nums[i]-nums[j])<threshold
                return true
            end
        end
    end
    return false
end

func abs:num n:num
    if n < 0
        return -n
    end
    return n
end

fails := 0
total := 0

func assert want:any got:any
    total = total + 1
    if want != got
        fails = fails + 1
        printf "want != got: want %v got %v\n" want got
    end
end

func finished
    printf "%v of %v tests passed\n" (total - fails) total
end

// -- Test Cases Start -- //
assert false (has_close_element [1.0 2.0 3.0] 0.5)
assert true (has_close_element [1.0 2.8 3.0 4.0 5.0 2.0] 0.3)
// -- Test Cases End -- //
finished