1431. Kids With the Greatest Number of Candies

Description

There are n kids with candies. You are given an integer array candies, where each candies[i] represents the number of candies the ith kid has, and an integer extraCandies, denoting the number of extra candies that you have.

Return a boolean array result of length n, where result[i] is true if, after giving the ith kid all the extraCandies, they will have the greatest number of candies among all the kids, or false otherwise.

Note 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: If you give all extraCandies to:
- Kid 1, they will have 2 + 3 = 5 candies, which is the greatest among the kids.
- Kid 2, they will have 3 + 3 = 6 candies, which is the greatest among the kids.
- Kid 3, they will have 5 + 3 = 8 candies, which is the greatest among the kids.
- Kid 4, they will have 1 + 3 = 4 candies, which is not the greatest among the kids.
- Kid 5, they will have 3 + 3 = 6 candies, which is the greatest 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.
Kid 1 will always have the greatest number of candies, even if a different kid is given the extra candy.

Example 3:

Input: candies = [12,1,12], extraCandies = 10
Output: [true,false,true]

 

Constraints:

  • n == candies.length
  • 2 <= n <= 100
  • 1 <= candies[i] <= 100
  • 1 <= extraCandies <= 50

Solutions

Solution 1

Python Code
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class Solution:
    def kidsWithCandies(self, candies: List[int], extraCandies: int) -> List[bool]:
        mx = max(candies)
        return [candy + extraCandies >= mx for candy in candies]

Java Code
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class Solution {
    public List<Boolean> kidsWithCandies(int[] candies, int extraCandies) {
        int mx = 0;
        for (int candy : candies) {
            mx = Math.max(mx, candy);
        }
        List<Boolean> res = new ArrayList<>();
        for (int candy : candies) {
            res.add(candy + extraCandies >= mx);
        }
        return res;
    }
}

C++ Code
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class Solution {
public:
    vector<bool> kidsWithCandies(vector<int>& candies, int extraCandies) {
        int mx = *max_element(candies.begin(), candies.end());
        vector<bool> res;
        for (int candy : candies) {
            res.push_back(candy + extraCandies >= mx);
        }
        return res;
    }
};

Go Code
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func kidsWithCandies(candies []int, extraCandies int) (ans []bool) {
	mx := slices.Max(candies)
	for _, candy := range candies {
		ans = append(ans, candy+extraCandies >= mx)
	}
	return
}

TypeScript Code
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function kidsWithCandies(candies: number[], extraCandies: number): boolean[] {
    const max = candies.reduce((r, v) => Math.max(r, v));
    return candies.map(v => v + extraCandies >= max);
}

Rust Code
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impl Solution {
    pub fn kids_with_candies(candies: Vec<i32>, extra_candies: i32) -> Vec<bool> {
        let max = *candies.iter().max().unwrap();
        candies
            .iter()
            .map(|v| v + extra_candies >= max)
            .collect()
    }
}

PHP Code
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class Solution {
    /**
     * @param Integer[] $candies
     * @param Integer $extraCandies
     * @return Boolean[]
     */
    function kidsWithCandies($candies, $extraCandies) {
        $max = max($candies);
        $rs = [];
        for ($i = 0; $i < count($candies); $i++) {
            array_push($rs, $candies[$i] + $extraCandies >= $max);
        }
        return $rs;
    }
}

C Code
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#define max(a, b) (((a) > (b)) ? (a) : (b))
/**
 * Note: The returned array must be malloced, assume caller calls free().
 */
bool* kidsWithCandies(int* candies, int candiesSize, int extraCandies, int* returnSize) {
    int mx = 0;
    for (int i = 0; i < candiesSize; i++) {
        mx = max(mx, candies[i]);
    }
    bool* ans = malloc(candiesSize * sizeof(bool));
    for (int i = 0; i < candiesSize; i++) {
        ans[i] = candies[i] + extraCandies >= mx;
    }
    *returnSize = candiesSize;
    return ans;
}