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style: use getOrDefault in MajorityElement (#5454)

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This commit is contained in:
Piotr Idzik
2024-09-18 22:58:49 +02:00
committed by GitHub
parent 2f9f448a1f
commit 7bde1523a5
1 changed files with 4 additions and 8 deletions
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12
src/main/java/com/thealgorithms/datastructures/hashmap/hashing/MajorityElement.java
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@ -18,17 +18,13 @@ public final class MajorityElement {
*/ */
public static List<Integer> majority(int[] nums) { public static List<Integer> majority(int[] nums) {
HashMap<Integer, Integer> numToCount = new HashMap<>(); HashMap<Integer, Integer> numToCount = new HashMap<>();
int n = nums.length; for (final var num : nums) {
for (int i = 0; i < n; i++) { final var curCount = numToCount.getOrDefault(num, 0);
if (numToCount.containsKey(nums[i])) { numToCount.put(num, curCount + 1);
numToCount.put(nums[i], numToCount.get(nums[i]) + 1);
} else {
numToCount.put(nums[i], 1);
}
} }
List<Integer> majorityElements = new ArrayList<>(); List<Integer> majorityElements = new ArrayList<>();
for (final var entry : numToCount.entrySet()) { for (final var entry : numToCount.entrySet()) {
if (entry.getValue() >= n / 2) { if (entry.getValue() >= nums.length / 2) {
majorityElements.add(entry.getKey()); majorityElements.add(entry.getKey());
} }
} }