Sort Characters by Frequency
Given a string, sort its characters in decreasing order of frequency.
Input format
A single line containing a lowercase string.
Output format
Print the string with characters sorted by decreasing frequency; characters with equal frequency are ordered alphabetically.
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
treeExpected output
eertExample 2
Input
cccaaaExpected output
aaaccc