🏆 [M💙 Challenge] SoloLearn Leaderboard System

Question

Monday Blue 💙 Challenge Series #2

In case you don't already know, the XP ranking of SoloLearn leaderboard is quite interesting as users with the same XP will be sharing the same rank.

For example, given the XP list [1, 5, 5, 6, 35, 35, 35] the leaderboard will be shown as below:-

Rank 1 : 35
Rank 1 : 35
Rank 1 : 35
Rank 4 : 6
Rank 5 : 5
Rank 5 : 5
Rank 7 : 1

💼 TASK
Write a program to accept an array of XP and output the leaderboard as format above.

🔧 TEST CASE
☑ [1, 5, 6, 37]
1 ▶ 37
2 ▶ 6
3 ▶ 5
4 ▶ 1

☑ [1, 2, 2, 3]
1 ▶ 3
2 ▶ 2
2 ▶ 2
4 ▶ 1

☑ [1, 5, 5, 6, 6, 6, 32, 32, 37]
1 ▶ 37
2 ▶ 32
2 ▶ 32
4 ▶ 6
4 ▶ 6
4 ▶ 6
7 ▶ 5
7 ▶ 5
9 ▶ 1

Happy Coding!!! 😁💻

Answer 1

Using function prototyping:

Array.prototype.sortXp = function() {
var cnt=1, pre;
return this.sort((a,b)=>b-a).map((v,i,a)=>{
var obv = {};
if(pre!==v) {
cnt = i + 1;
pre=v;
}
obv.rank = cnt;
obv.xp = v;
return obv;
}).map(i=>`${i.rank}:${i.xp}`);
}
https://code.sololearn.com/WPcUJR3CZWxD/?ref=app

Answer 2

My try:
https://code.sololearn.com/WmsncYs5yzDA/?ref=app

Answer 3

https://code.sololearn.com/ch09lTv1A4Rn/#cs

Answer 4

My try

https://code.sololearn.com/chTRidQJjTzI/?ref=app

Answer 5

https://code.sololearn.com/cMIGEUtkp3MB/?ref=app
My Python try

Answer 6

Ahh sir krishna doesn't let me do first!

Answer 7

@Вукан and @Aaron both of the program got a minor bug. Please try again with the test cases above. 😉

Answer 8

@Vari93 Your program run perfectly but there's a minor bug in the rank display. Please refer to the test case above. 😉

Answer 9

heres mine::::::

https://code.sololearn.com/cGLk3e9b7Ywf/?ref=app

Answer 10

Here's my own C# implementation! ✌

Unfortunately no LINQ this time. Thanks everyone for your participation and let's move to the next challenge! ❤

https://code.sololearn.com/cexWi7puuWj3/?ref=app

https://www.sololearn.com/Discuss/756793/?ref=app

Answer 11

my practice on python https://code.sololearn.com/cloIYaGCIV5E/#py

Answer 12

my try
https://code.sololearn.com/c3Bzc5SVnF35

Answer 13

Might not be the best way to do it, but I used a list to iterate through and get the highest values first.

https://code.sololearn.com/c4lBRWy571kP/?ref=app

Answer 14

My try:
https://code.sololearn.com/coDRiDQ81bjS/?ref=app

Answer 15

Here you go. Array size and array input is determined randomly.
https://code.sololearn.com/cY4bGfrGhRm3/?ref=app

Answer 16

@Zephyr Koo, I'm failing to notice this bug you mentioned.

Answer 17

Hmmm, okay

Answer 18

Nice tries

Answer 19

@Vari93 You may hard code the XP I've provided above and compare the results with your algorithm. 😉

Answer 20

😎😎😎😎🗾