Concatenate Unique Characters
Create a string concatenating the unique characters from multiple strings.
Easy12/16/2023
Problem statement
Given a string, return a string containing all the unique characters from that string, order matters. The input will be given as a single line.
Problem leaderboard
# | Size | % | Users |
|---|---|---|---|
#1 | 27 c. | Top 73% | +37           |
#2 | 29 c. | Top 80% |     |
#3 | 32 c. | Top 88% |      |
#4 | 34 c. | Top 92% |    |
#5 | 39 c. | Top 94% |  |
#6 | 52 c. | Top 95% |  |
#7 | 68 c. | Top 97% |  |
#8 | 356 c. | Top 98% |  |
#9 | 388 c. | Top 100% |  |
© 2026 Corentin Thomasset