Double even indexed characters

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Language is selected by the extension of the file. See the list of supported languages to know the extension of your language.

Problem

Given an input string, output a string where every other character is repeated.

Options

exec is denied

rejudge feature is enabled

now post-mortem time, all source codes will be revealed

Sample input:_

abcde

Sample output:

abbcdde

Sample input:_

testcase2

Sample output:

teesttcaasee2

Sample input:_

new problem

Sample output:

neew  prrobbleem

Ranking

Ruby _

Rank	User	Size	Time	Date	Statistics
1	mitchs	23	0.0319	2020/02/02 12:28:52	0B / 8B / 13B

Ruby2 _

Rank	User	Size	Time	Date	Statistics
1	rotary-o	24	0.1667	2020/02/12 22:59:34	0B / 10B / 14B
2	letranger	28	0.1662	2020/02/02 08:32:39	0B / 14B / 12B

Perl _

Rank	User	Size	Time	Date	Statistics
1	mitchs	19	0.0322	2020/02/03 03:05:48	0B / 6B / 13B
2	%20	19	0.0322	2020/02/03 04:46:32	0B / 6B / 13B
3	tails	19	0.0340	2020/02/03 09:30:56	0B / 6B / 13B
4	shlomif	23	0.0573	2020/02/02 16:54:32	0B / 8B / 13B
5	McBusLuck	23	0.0329	2020/02/03 20:45:12	0B / 8B / 13B

Python _

Rank	User	Size	Time	Date	Statistics
1	xnor (Lynn)	40	0.0876	2020/02/22 19:24:14	0B / 25B / 12B

Python3 _

Rank	User	Size	Time	Date	Statistics
1	mypetlion	40	0.1161	2020/02/05 08:15:24	0B / 25B / 11B
2	mitchs	40	0.2097	2020/02/05 11:11:55	0B / 25B / 11B
3	xnor	40	0.1650	2020/02/14 20:04:58	0B / 25B / 11B

Scheme _

Rank	User	Size	Time	Date	Statistics
1	kaki	52	0.0983	2020/12/28 03:23:34	0B / 31B / 21B

JavaScript _

Rank	User	Size	Time	Date	Statistics
1	Hendrik	41	0.0394	2020/02/03 04:56:16	0B / 22B / 19B
2	clock	41	0.0560	2020/02/13 00:29:20	0B / 22B / 19B

Lua _

Rank	User	Size	Time	Date	Statistics
1	Hendrik	38	0.0357	2020/02/02 05:30:39	0B / 17B / 21B
2	clock	38	0.0348	2020/02/12 00:12:07	0B / 17B / 21B

J _

Rank	User	Size	Time	Date	Statistics
1	oooq	18	0.0754	2020/12/28 10:54:20	0B / ?B / ?B

Jelly _

Rank	User	Size	Time	Date	Statistics
1	Erik the Outgolfer	5	0.9932	2021/05/20 09:46:01	5B / 0B / 0B

C _

Rank	User	Size	Time	Date	Statistics
1	nu	39	0.3753	2020/02/05 22:56:21	0B / 24B / 15B
2	tails	40	0.3882	2020/02/05 18:36:21	0B / 25B / 15B
3	mitchs	43	0.0323	2020/02/05 11:01:56	0B / 23B / 20B
4	%20	45	0.0325	2020/02/03 05:13:43	0B / 24B / 21B
5	a	52	0.0398	2020/02/14 18:04:04	0B / ?B / ?B
6	chocobi	54	0.0315	2020/02/04 21:06:41	0B / 29B / 25B
7	sadakiyo	63	0.0411	2020/02/13 07:14:14	0B / ?B / ?B
8	_	66	0.0406	2020/02/13 07:12:54	0B / ?B / ?B

Haskell _

Rank	User	Size	Time	Date	Statistics
1	henkma	40	0.0493	2020/02/15 03:07:53	0B / 25B / 10B

AWK _

Rank	User	Size	Time	Date	Statistics
1	clock	28	0.0404	2020/02/13 00:50:38	0B / 8B / 20B
2	cympfh	30	0.0400	2020/02/10 14:59:43	0B / ?B / ?B

sed _

Rank	User	Size	Time	Date	Statistics
1	Hendrik	14	0.0312	2020/02/02 05:20:15	0B / 3B / 11B
2	%20	14	0.0311	2020/02/03 02:20:41	0B / 3B / 11B
3	tails	14	0.0313	2020/02/03 09:25:41	0B / 3B / 11B
4	McBusLuck	14	0.0313	2020/02/03 19:37:24	0B / 3B / 11B
5	eban	14	0.0314	2020/02/03 21:27:35	0B / 3B / 11B
6	_	14	0.0311	2020/02/04 04:43:29	0B / 3B / 11B
7	mitchs	14	0.0312	2020/02/04 11:08:13	0B / 3B / 11B
8	cympfh	14	0.0415	2020/02/10 14:49:04	0B / ?B / ?B
9	clock	14	0.0420	2020/02/12 00:14:27	0B / 3B / 11B

jq _

Rank	User	Size	Time	Date	Statistics
1	clock	34	0.0451	2020/02/14 23:02:41	0B / 13B / 21B

Bash _

Rank	User	Size	Time	Date	Statistics
1	McBusLuck	20	0.0050	2020/02/03 20:56:15	0B / 6B / 13B

Bash (builtins) _

Rank	User	Size	Time	Date	Statistics
1	tails	36	0.0362	2020/02/05 10:55:28	0B / 19B / 11B
2	McBusLuck	44	0.0352	2020/02/03 19:51:15	0B / 22B / 18B

Zsh _

Rank	User	Size	Time	Date	Statistics
1	Hendrik	20	0.0359	2020/02/02 05:36:07	0B / 6B / 13B

wake _

Rank	User	Size	Time	Date	Statistics
1	clock	25	0.0508	2020/02/13 00:57:07	0B / 3B / 21B

xgawk _

Rank	User	Size	Time	Date	Statistics
1	olf	28	0.0424	2020/02/15 19:51:02	0B / 9B / 19B

R _

Rank	User	Size	Time	Date	Statistics
1	olf	47	0.3174	2020/02/14 23:29:04	0B / 23B / 24B
2	clock	47	0.3279	2020/02/15 00:43:40	0B / 23B / 24B

Brainfuck _

Rank	User	Size	Time	Date	Statistics
1	%20	13	0.0335	2020/02/03 05:25:13	0B / 0B / 13B

Whitespace _

Rank	User	Size	Time	Date	Statistics
1	%20	50	0.0696	2020/02/03 05:01:07	0B / 0B / 0B

Befunge _

Rank	User	Size	Time	Date	Statistics
1	%20	10	0.0243	2020/02/03 05:03:44	0B / 1B / 9B
2	clock	10	0.0417	2020/02/13 00:31:30	0B / 1B / 9B

Befunge-98 _

Rank	User	Size	Time	Date	Statistics
1	kaki	8	0.0502	2020/12/28 02:57:29	0B / 0B / 8B

Hexagony _

Rank	User	Size	Time	Date	Statistics
1	hako	7	0.0785	2020/03/27 16:01:45	0B / 0B / 7B

GolfScript _

Rank	User	Size	Time	Date	Statistics
1	%20	8	0.0393	2020/02/03 05:40:10	0B / 1B / 7B
2	tails	8	0.0386	2020/02/03 09:29:11	0B / 2B / 6B
3	mitchs	8	0.0621	2020/02/04 11:07:57	0B / 2B / 6B
4	clock	8	0.0734	2020/02/12 00:53:53	0B / 2B / 6B

gs2 _

Rank	User	Size	Time	Date	Statistics
1	mitchs	3	0.1931	2020/02/03 17:00:40	2B / 1B / 0B
2	tails	3	0.3298	2020/02/05 10:40:10	2B / 1B / 0B

Burlesque _

Rank	User	Size	Time	Date	Statistics
1	Hendrik	11	0.1247	2020/02/02 04:16:55	0B / 4B / 7B
2	clock	11	0.0452	2020/02/12 00:46:18	0B / 5B / 6B

FerNANDo _

Rank	User	Size	Time	Date	Statistics
1	%20	73	0.1016	2020/02/03 05:33:26	0B / 37B / 0B
2	tails	73	0.1045	2020/02/03 09:24:46	0B / 37B / 0B

Lazy-K _

Rank	User	Size	Time	Date	Statistics
1	tails	143	0.0329	2020/02/03 10:05:40	0B / 83B / 60B

Grass _

Rank	User	Size	Time	Date	Statistics
1	%20	35	0.0317	2020/02/08 05:53:12	0B / 35B / 0B
2	tails	35	0.0425	2020/02/10 16:13:28	0B / 35B / 0B

z80 _

Rank	User	Size	Time	Date	Statistics
1	McBusLuck	11	0.0442	2020/02/05 08:12:30	8B / 2B / 1B
2	tails	11	0.0458	2020/02/05 16:27:54	7B / 2B / 2B

DOS _

Rank	User	Size	Time	Date	Statistics
1	McBusLuck	20	7.7863	2020/02/05 21:27:50	15B / 2B / 3B

Vim _

Rank	User	Size	Time	Date	Statistics
1	%20	13	0.0282	2020/02/03 06:01:13	0B / 12B / 1B
2	clock	13	0.0369	2020/02/12 00:03:31	0B / 12B / 1B

Groovy _

Rank	User	Size	Time	Date	Statistics
1	clock	37	2.1379	2020/02/12 00:52:15	0B / 23B / 12B
2	Hendrik	43	2.0491	2020/02/03 06:13:52	0B / 25B / 18B

Scala _

Rank	User	Size	Time	Date	Statistics
1	Hendrik	41	4.7994	2020/02/02 07:50:51	0B / 25B / 16B
2	rotary-o	41	9.8775	2020/02/11 22:16:21	0B / 20B / 20B
3	clock	41	4.2053	2020/02/12 00:00:36	0B / 25B / 16B

Language Ranking_

Rank	Lang	User	Size	Score
1	gs2	mitchs	3	10000
2	Jelly	Erik the Outgolfer	5	6000
3	Hexagony	hako	7	4285
4	GolfScript	%20	8	3750
5	Befunge-98	kaki	8	3750
6	Befunge	%20	10	3000
7	Burlesque	Hendrik	11	2727
8	z80	McBusLuck	11	2727
9	Brainfuck	%20	13	2307
10	Vim	%20	13	2307
11	sed	Hendrik	14	2142
12	J	oooq	18	1666
13	Perl	mitchs	19	1578
14	Zsh	Hendrik	20	1500
15	Bash	McBusLuck	20	1500
16	DOS	McBusLuck	20	1500
17	Ruby	mitchs	23	1304
18	Ruby2	rotary-o	24	1250
19	wake	clock	25	1200
20	AWK	clock	28	1071
21	xgawk	olf	28	1071
22	jq	clock	34	882
23	Grass	%20	35	857
24	Bash (builtins)	tails	36	833
25	Groovy	clock	37	810
26	Lua	Hendrik	38	789
27	C	nu	39	769
28	Python3	mypetlion	40	750
29	Haskell	henkma	40	750
30	Python	xnor (Lynn)	40	750
31	Scala	Hendrik	41	731
32	JavaScript	Hendrik	41	731
33	R	olf	47	638
34	Whitespace	%20	50	600
35	Scheme	kaki	52	576
36	FerNANDo	%20	73	410
37	Lazy-K	tails	143	209

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