Birthday Cake Candles
public static int birthdayCakeCandles(List<Integer> candles) {
// Write your code here
TreeMap<Integer,Integer> f = new TreeMap<>();
for (Integer a: candles)
f.put(a,f.getOrDefault(a, 0)+1);
return f.lastEntry().getValue();
}
https://www.hackerrank.com/challenges/mini-max-sum/problem
public static void miniMaxSum(List<Integer> arr) {
// Write your code here
Collections.sort(arr);
BigInteger sum = BigInteger.ZERO;
for (int i = 0; i < arr.size(); i++){
sum =sum.add(BigInteger.valueOf(arr.get(i)));
}
System.out.print(sum.subtract(BigInteger.valueOf(arr.get(arr.size()-1).intValue()))+" ");
System.out.print(sum.subtract(BigInteger.valueOf(arr.get(0).intValue())));
}
https://www.hackerrank.com/challenges/compare-the-triplets/problem
public static List<Integer> compareTriplets(List<Integer> a, List<Integer> b) {
// Write your code here
List<Integer> out = new ArrayList<Integer>(2);
out.add(0);
out.add(0);
for (int i = 0; i < a.size(); i++) {
if (a.get(i) > b.get(i))
out.set(0, out.get(0) + 1);
else if (a.get(i) < b.get(i))
out.set(1, out.get(1) + 1);
}
return out;
}
Omar GamalEldeen 