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How to find the max value of an arraylist and two of its Index position using java?

• Hi, Pls anybody suggest how to find the maximum value from an arraylist with its index position using java. ArrayList ar=new ArrayList; ar.add(2); ar.add(4); ar.add(12); ar.add(10); ar.add(12); String obj = Collections.max(ar); int index = ar.indexOf(obj); System.out.println("obj max value is"+obj +" and index position is"+ index); In the above program, it just returns the output as obj max value is 12 and index position is 2. But my actual output want to be as index position will be 2 and 4 (Bcoz max value 12 is present in two index position). Please suggest any ideas. Thanks in advance.

• Answer:

  ArrayList ar=new ArrayList(); ar.add(2); ar.add(4); ar.add(12); ar.add(10); ar.add(12); int obj = Collections.max(ar); for(int index = 0; index<ar.size() ;index++){ if(ar.get(index).equals(obj)){ System.out.println("obj max value is "+ obj + " and index position is "+ index); } }