You are ignoring the overlapse. For example the ex.1 Has 1-5 and 1-5. if you were to write every number between the both of them you would indeed get 9 numbers(length 8), but all of them would be dublicated. So the number of the unique numbers is 5(and the length is 4): 1, 2, 3, 4, 5; it is simpler to understand if you write the intervals on one line in a pice of paper. :)

.

Approved

thanks a lot

upper bound is excluded in the inputs, so:

n:      1   5    ...
1-5:    ----
1-6:    -----
5-11:       ------
10-20:           ----------
16-19:                 ---
merged: ------------------- <=> from 1 to 19 (included), hence 19

Hi there.

sumIntervals( [
[1, 5],
[10, 20],
[1, 6],
[16, 19],
[5, 11]
] ) => 19

could you help me?
I dont understand how to parse it, what are arrays overlapping.

The ISSUE label is for provable kata issues. Please use the QUESTION label when asking for help. See https://docs.codewars.com/training/troubleshooting#post-discourse.

What do i do wrong? Golang

Refer to the kata's description.

Hi there.

I dont understand

  Expect(SumOfIntervals([][2]int{{1, 5}, {1, 5}})).To(Equal(4))
  Expect(SumOfIntervals([][2]int{{1, 4}, {7, 10}, {3, 5}})).To(Equal(7))
  Expect(SumOfIntervals([][2]int{{0, 20}, {-100_000_000, 10}, {30, 40}})).To(Equal(100_000_030))

1 test has to equal 8

2 test has to equal 8

3 test has to equal 100_000_040. For example {-4, 1}: 1 - (- 4) = 5 :> -4, -3, -2, -1, 0, interval is 5,

What do i do wrong?
Golang

It's 10 years old :) Difficulty standards have increased since then.

Hi. =) U're rgiht. That may happen, I am chiting some times. This cata was needed only for my course passing

it is cheat =)
good job

thank you a lot.
I ve done this kata

Array a:       6, 9, 7, 0, 11,
Array b:   -2,       7,        18, -1, 16, -19, 3, -18, -5,
Answer:        6, 9,    0, 11,

Hello.

My program has done tests which was wrong

For example wrong test:
Exptected:
{6, 9, 11}
Equal:
{0, 6, 9, 11}

My test has done:
Expect(ArrayDiff([]int{6, 9, 7, 0, 11}, []int{-2, 7, 18, -1, 16, -19, 3, -18, -5})).To(Equal([]int{6, 9, 11})), passed

Expect(ArrayDiff([]int{-18, 9, 13, 1, 6, 13, -5, 17, -4, -10, -10, -1, 3, 12, -4, 10, 0, -15}, {3, 19})).To(Equal([]int{6, 9, 11})), passed

Why?

its amazing, thank you!