Created
February 20, 2021 04:32
Sparse Arrays - HackerRank
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#!/bin/python3 | |
import math | |
import os | |
import random | |
import re | |
import sys | |
# Complete the matchingStrings function below. | |
def matchingStrings(strings, queries): | |
result = [] | |
# this is not an optimal way. Best to store vals in a hashmap | |
#for q in queries: | |
# amount = strings.count(q) | |
# result.append(amount) | |
hmap = {} | |
for s in strings: | |
if s in hmap: | |
hmap[s] += 1 | |
else: | |
hmap[s] = 1 | |
for q in queries: | |
if q in hmap: | |
result.append(hmap[q]) | |
else: | |
result.append(0) | |
return result | |
if __name__ == '__main__': | |
fptr = open(os.environ['OUTPUT_PATH'], 'w') | |
strings_count = int(input()) | |
strings = [] | |
for _ in range(strings_count): | |
strings_item = input() | |
strings.append(strings_item) | |
queries_count = int(input()) | |
queries = [] | |
for _ in range(queries_count): | |
queries_item = input() | |
queries.append(queries_item) | |
res = matchingStrings(strings, queries) | |
fptr.write('\n'.join(map(str, res))) | |
fptr.write('\n') | |
fptr.close() |
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