How to put numbers into an array and sorted by most frequent number in java -


i given question on programming in java , wondering best way of doing it.

the question on lines of:

from numbers provided, how in java display frequent number. numbers was: 0, 3, 4, 1, 1, 3, 7, 9, 1

at first thinking should in array , sorted first maybe have go through loop. on right lines. examples greatly

if numbers small, can frequent value creating array keep track of count each number. algorithm be:

  • find maximum value in list
  • create integer array of size max + 1 (assuming non-negative values) store counts each value in list
  • loop through list , increment count @ index of each value
  • scan through count array , find index highest value

the run-time of algorithm should faster sorting list , finding longest string of duplicate values. tradeoff takes more memory if values in list large.


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