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Hotel Reviews

Problem Setter: ishubansal Problem Tester: raghav_aggiwal

Given a set of reviews provided by the customers for different hotels and a string containing “Good Words”, you need to sort the reviews in descending order according to their “Goodness Value” (Higher goodness value first). We define the “Goodness Value” of a string as the number of “Good Words” in that string.

Note: Sorting should be stable. If review i and review j have the same “Goodness Value” then their original order would be preserved.

You are expected to use Trie in an Interview for such problems


1.   1 <= No.of reviews <= 200
2.   1 <= No. of words in a review <= 1000
3.   1 <= Length of an individual review <= 10,000
4.   1 <= Number of Good Words <= 10,000
5.   1 <= Length of an individual Good Word <= 4
6.   All the alphabets are lower case (a - z)


S : A string S containing "Good Words" separated by  "_" character. (See example below)
R : A vector of strings containing Hotel Reviews. Review strings are also separated by "_" character.


A vector V of integer which contain the original indexes of the reviews in the sorted order of reviews. 

V[i] = k  means the review R[k] comes at i-th position in the sorted order. (See example below)
In simple words, V[i]=Original index of the review which comes at i-th position in the sorted order. (Indexing is 0 based)


S = "cool_ice_wifi"
R = ["water_is_cool", "cold_ice_drink", "cool_wifi_speed"]

ans = [2, 0, 1]
Here, sorted reviews are ["cool_wifi_speed", "water_is_cool", "cold_ice_drink"]
NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a doubt? Checkout Sample Codes for more details.
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