_1282.java

packagecom.fishercoder.solutions.secondthousand;

importjava.util.ArrayList;
importjava.util.HashMap;
importjava.util.List;
importjava.util.Map;

publicclass_1282 {
publicstaticclassSolution1 {
publicList<List<Integer>> groupThePeople(int[] groupSizes) {
Map<Integer, List<Integer>> map = newHashMap<>();
for (inti = 0; i < groupSizes.length; i++) {
List<Integer> list = map.getOrDefault(groupSizes[i], newArrayList<>());
list.add(i);
map.put(groupSizes[i], list);
 }
List<List<Integer>> result = newArrayList<>();
for (intkey : map.keySet()) {
List<Integer> list = map.get(key);
inti = 0;
do {
result.add(list.subList(i, i + key));
i += key;
 } while (i + key <= list.size());
 }
returnresult;
 }
 }
}