Ep1-Freq-Table.md

Part 3 Episode 1/3: Frequency Tables

Frequency tables are generally used to keep track of how many times a certain element occurs within a set of elements.

Frequency Table Tutorial

Note that sometimes, the array elements are too large and you can't always use a vector to maintain the count. In such cases, you can use a map or unordered_map to achieve the same result.

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Here are some links to practice Frequency Table problems:

1. Codeforces 4 C

2. Codeforces 525 A

3. Codeforces 1520 D