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) { // write code here HashMap hashMap = new HashMap(); int time = 0; for(int i = 0; i < numbers.length; i++){ if(hashMap.get(numbers[i]) == null){ hashMap.put(numbers[i], 1); time = 1; }else{ time = (int)hashMap.get(numbers[i]); time++; hashMap.put(numbers[i], time); } if(time > numbers.length/2){//不能用大于等于 哈哈 return numbers[i]; } } return 0; } }