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Kids With the Greatest Number of Candies - Array - Easy - LeetCode - MiniTV

Kids With the Greatest Number of Candies - Array - Easy - LeetCode - मिनी टीवी

Given the array candies and the integer extraCandies, where candies[i] represents the number of candies that the ith kid has.

For each kid check if there is a way to distribute extraCandies among the kids such that he or she can have the greatest number of candies among them. Notice that multiple kids can have the greatest number of candies.

 

Example 1:

Input: candies = [2,3,5,1,3], extraCandies = 3

Output: [true,true,true,false,true] 

Explanation: 

Kid 1 has 2 candies and if he or she receives all extra candies (3) will have 5 candies --- the greatest number of candies among the kids. 

Kid 2 has 3 candies and if he or she receives at least 2 extra candies will have the greatest number of candies among the kids. 

Kid 3 has 5 candies and this is already the greatest number of candies among the kids. 

Kid 4 has 1 candy and even if he or she receives all extra candies will only have 4 candies. 

Kid 5 has 3 candies and if he or she receives at least 2 extra candies will have the greatest number of candies among the kids. 

 

Example 2:

Input: candies = [4,2,1,1,2], extraCandies = 1

Output: [true,false,false,false,false] 

Explanation: There is only 1 extra candy, therefore only kid 1 will have the greatest number of candies among the kids regardless of who takes the extra candy.

 

Example 3:

Input: candies = [12,1,12], extraCandies = 10

Output: [true,false,true]

 

Constraints:

2 <= candies.length <= 100

1 <= candies[i] <= 100

1 <= extraCandies <= 50

 

Solution:

using System.Collections.Generic;

namespace CodingUnitTest.Easy.Array
{
    public class KidsWithCandiesSoln
    {
        public IList<bool> KidsWithCandies(int[] candies, int extraCandies)
        {
            var res = new List<bool>();
            int max = int.MinValue;
            for (int i = 0; i < candies.Length; i++)
            {
                if (max < candies[i])
                {
                    max = candies[i];
                }
            }

            for (int i = 0; i < candies.Length; i++)
            {
                res.Add((candies[i] + extraCandies) >= max);                
            }

            return res;
        }
    }
}

 

Time Complexity: O(n)

Space Complexity: O(1)

 

Unit Tests:

using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;

namespace CodingUnitTest.Easy.Array
{
    [TestClass]
    public class KidsWithCandiesSolnTests
    {
        [TestMethod]
        public void KidsWithCandiesSoln_First()
        {
            var candies = new int[] { 2, 3, 5, 1, 3 };
            var extraCandies = 3;
            var output = new bool[] { true, true, true, false, true };
            var res = new KidsWithCandiesSoln().KidsWithCandies(candies, extraCandies);

            AreEqual(res, output);
        }

        [TestMethod]
        public void KidsWithCandiesSoln_Second()
        {
            var candies = new int[] { 4, 2, 1, 1, 2 };
            var extraCandies = 1;
            var output = new bool[] { true, false, false, false, false };
            var res = new KidsWithCandiesSoln().KidsWithCandies(candies, extraCandies);

            AreEqual(res, output);
        }

        [TestMethod]
        public void KidsWithCandiesSoln_Third()
        {
            var candies = new int[] { 12, 1, 12 };
            var extraCandies = 10;
            var output = new bool[] { true, false, true };
            var res = new KidsWithCandiesSoln().KidsWithCandies(candies, extraCandies);

            AreEqual(res, output);
        }

        public static void AreEqual(IList<bool> actual, bool[] expected)
        {
            for (int i = 0; i < actual.Count; i++)
            {
                Assert.AreEqual(expected[i], actual[i]);
            }
        }
    }
}