How to find max and min value

Question

So how do I find max and min value of group of numbers. Ex: The numbers are

int num[] = {1,2,3,4,5,6,7,8,9,2,2,2,2,2,};

The next things is how to find out how many times 2 appears in the array. This is what I think.

char a = "2"
int count = 0;
if (num.length = a) {
    count++;
    System.out.print (count);
}

Don't tell us what you think, tell us what you know. There are syntax errors and improper comparisons here. — Sterling Archer, Oct 14 '15 at 18:32
[`Multiset`](https://code.google.com/p/guava-libraries/wiki/NewCollectionTypesExplained) is a way to count occurences — , Oct 14 '15 at 18:34
[Here](http://stackoverflow.com/a/1486010/4228138) you find a answer. — Mateusz Korwel, Oct 14 '15 at 18:35
Use TreeMap of Integer,Integer ( number as key and occurence as value) — Kumar Abhinav, Oct 14 '15 at 18:41

Pedro Lobito · Answer 1 · 2015-10-16T15:27:46.383

How do I find max and min value of group of numbers.

int num[] = {1,2,3,4,5,6,7,8,9,2,2,2,2,2,};
getMaxValue(num);
getMinValue(num);

// getting the maximum value
public static int getMaxValue(int[] array){  
      int maxValue = array[0];  
      for(int i=1;i < array.length;i++){  
      if(array[i] > maxValue){  
      maxValue = array[i];  

         }  
     }  
             return maxValue;  
}  

// getting the miniumum value
public static int getMinValue(int[] array){  
     int minValue = array[0];  
     for(int i=1;i<array.length;i++){  
     if(array[i] < minValue){  
     minValue = array[i];  
        }  
     }  
    return minValue;  
}

score 0 · Answer 2 · answered Oct 14 '15 at 18:35

0

For occurences use:

int arr = new int[10]; 
// fill arr with values;
for(int i=0; i<arr.length; i++){
  if(arr[i] == 2){ counter++;}
}

answered Oct 14 '15 at 18:35

CIsForCookies

12,097
11
59
124

score 0 · Answer 3 · answered Oct 14 '15 at 18:40

Use a TreeMap with key as the Number and value is the number of occurences .Then use firstEntry() and lastEntry() for getting least and maximum value.TreeMap will sort the Integers in ascending order.

TreeMap<Integer,Integer> tuples = new TreeMap<Integer,Integer>();
For occurence of 2 ,simply use Integer tuples.get(2);

How to find max and min value

3 Answers3

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