java - Finding Mode of a Data Set using HashMap and ArrayList. Can't figure it out -


this question has answer here:

so i'm trying make set of methods find mode of set of ints given (in form of array), , return array holding of modes, including possibility of no modes. sat down while writing these snippets of code , couldn't work, after extensive debugging. code isn't in great style want know if figure out going wrong. way, main() method there test out method. here's code:

public static int[] getmode(int[] numset) {     map<integer, integer> vals = new hashmap<integer, integer>();     arraylist<integer> modes = new arraylist<integer>();     int highcount = 0;      for(int num : numset) {         if(vals.containskey(num))             vals.put(num, vals.get(num) + 1);         else             vals.put(num, 0);            }      if(allvaluesequal(vals)) return new int[0];      for(int key : vals.keyset()) {         if(vals.get(key) > highcount) {             highcount = vals.get(key);         }     }      for(int key : vals.keyset()) {         if(vals.get(key) == highcount)             modes.add(key);     }      int[] mode = new int[modes.size()];     int count = 0;     for(int num : modes) {         mode[count] = num;         count++;     }       return mode; }  private static boolean allvaluesequal(map<integer,integer> vmap) {     arraylist<integer> = new arraylist<integer>();     for(int key : vmap.keyset()) {         a.add(vmap.get(key));     }      for(int = 0, n = a.size(); < n; i++) {         if(a.get(i) != a.get(0) && != 0)             return false;     }     return true; }  public static void main(string[] args) {     int[] array = {6,10,10};     system.out.println(getmode(array)); }

the result: [i@677327b6. utterly stumped. ideas?

you can use arrays.tostring() print out contents of array:

public static void main(string[] args) {     int[] array = {6,10,10};     system.out.println(arrays.tostring(getmode(array))); }

the previous result getting [i@677327b6 reference value.


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