dsa2 min read
Unique Number of Occurrences — Frequency Map Validation
Check if all value frequencies are unique using two hash sets in O(n).
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Frequency-map
3 articles
dsa2 min read
Tuple with Same Product — Product Frequency Map
Count tuples (a,b,c,d) where a*b=c*d by counting pairs with each product using a frequency map.
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dsa1 min read
Most Common Word — Normalize + Frequency Map
Find the most common word not in a banned list by normalizing input and using a frequency counter.
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