How should I practice Most Frequent Word across Grouped Arrays?

Start by reading the full statement, solve the visible examples, then compare the pattern against related ZipRecruiter phone screen problems in FastPrep.

Is Most Frequent Word across Grouped Arrays associated with ZipRecruiter?

FastPrep tags this as a ZipRecruiter phone screen coding practice problem when the problem catalog has that company and stage context.

Most Frequent Word across Grouped Arrays

ZipRecruiter● EasyNEW GRADPHONE SCREEN

Learn

Problem statement

Count every word occurrence across all rows of groups. Return the word with highest frequency, breaking ties lexicographically. Matching is case-sensitive. Return an empty string when there are no words.

Function

mostFrequentWord(groups: String[][]) → String

Examples

Example 1

groups = [["a","b"],["a","c"]]return = "a"

Word a occurs twice across rows.

Example 2

groups = [["beta"],["alpha"]]return = "alpha"

Lexicographic order resolves equal frequency.

Constraints

0 <= groups.length <= 10000
The total number of words is at most 100000.