题解 | #数组中出现次数超过一半的数字#
数组中出现次数超过一半的数字
https://www.nowcoder.com/practice/e8a1b01a2df14cb2b228b30ee6a92163
import java.util.*; public class Solution { /** * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 * * * @param numbers int整型一维数组 * @return int整型 */ public int MoreThanHalfNum_Solution (int[] numbers) { int length = numbers.length; Map<Integer, Integer> map = new HashMap<>(); for (int num : numbers) { if (map.get(num) == null) { map.put(num, 1); } else { map.put(num, map.get(num) + 1); } } for (Map.Entry<Integer, Integer> entry : map.entrySet()) { if (entry.getValue() > length / 2) { return entry.getKey(); } } return 0; } }