key-value

Supose my dictionary: mydict = [{"red":6}, {"blue":5}, {"red":12}] This is what I've done so far: for key, value in mydict() : if key == mydict.keys(): key[value] += value else: print (key, value) I don't think I'm getting it quite right (been stuck for hours), but I want the output to look like this: blue 5 red 18 or red 18 blue 5 I do not recommend this since it results a messy design: class MyDict(dict): def __setitem__(self, key, value): if key in self: super().__setitem__(key, self[key] + value) else: super().__setitem__(key, value) >>> d = MyDict({'red': 6, 'blue': 5}) >>> d['red'] = 12

import java.util.*; public class Sort { static class ValueComparator implements Comparator<String> { Map<String, Integer> base; ValueComparator(Map<String, Integer> base) { this.base = base; } @Override public int compare(String a, String b) { if (base.get(a) >= base.get(b)) { return 1; } else { return -1; } } } public static void main(String[] args) { HashMap<String, Integer> map = new HashMap<String, Integer>(); ValueComparator vc = new ValueComparator(map); TreeMap<String, Integer> sorted = new TreeMap<String, Integer>(vc); map.put("A", 1); map.put("B", 2); sorted.putAll(map); for (String

I have a set of values which need to be shuffled when needed. I don't know which variable type is best for me. Data is actually based on key-value structure.Like; 100 "white" 200 "black" 300 "red" and like that. What I want to do is to change the key-value pairs according to I don't know yet, some algorithm.But they need to be shuffled like this, but shuffling need to be not random , so I can revert data when I need. 100 "red" 200 "white" 300 "black" I don't really know how my approach should be to the solution. Should I use HashTable or something, and how can I shuffle them dynamically? Any