Java treemap

Treemap in java

TreeSet: Can contain only unique values and it is sorted in ascending order
TreeMap: Can contain only unique keys and keys are sorted in ascending order.

Java treemap

import java.util.*;  
class Tree_Map{  
public static void main(String args[]){  
   TreeMap<Integer,String> map=new TreeMap<Integer,String>();    
      map.put(93,"Afghanistan");    
      map.put(213,"Algeria");    
      map.put(55,"Brazil");       
        
      for(Map.Entry mapTree:map.entrySet()){    
       System.out.println(mapTree.getKey()+" "+mapTree.getValue());    
      }    
}  
}

Source: softhunt.net

Treemap

>>> def treemap(lst):
...     for i in range(len(lst)):
...         if type(lst[i])==int:
...             lst[i]=lst[i]**2
...         elif type(lst[i])==list:
...             treemap(lst[i])
...     return lst
>>> lst = [1, 2, 3, [4, [5, 6], 7]]
>>> print(treemap(lst))
[1, 4, 9, [16, [25, 36], 49]]

Source: stackoverflow.com

Treemap java

TreeMap<Integer, String> x = new TreeMap<Integer, String>();    
tm.put(1, "Hello");

Treemap

def treemap(lst):
    cp = list()
    for element in lst:
        if isinstance(element, list):
            cp.append(treemap(element))
        else:
            cp.append(element**2)
    return cp

Source: stackoverflow.com

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