#0194

Remove Duplicate Rows in R

EasyR15 min10 XP

Problem

Given a data frame, return rows with exact duplicates removed.

Deduplication is a common cleaning step before counts, joins, and model training.

Example 1

Inputrows (1,a), (1,a), (2,b)

Outputrows (1,a), (2,b)

The second identical row is removed.

CodeR

df <- data.frame(id = c(1, 1, 2), value = c("a", "a", "b"))

# write your code here

df <- data.frame(id = c(1, 1, 2), value = c("a", "a", "b"))

# write your code here

Visible browser tests run here when available.

Testcases1 visible / 3 hidden categories

Core example

Inputrows (1,a), (1,a), (2,b)

Expectedrows (1,a), (2,b)

The second identical row is removed.

Hidden Test Categories

minimal inputrepeated valueslarger realistic input