题目：

题解：

class Solution {public int findMinDifference(List<String> timePoints) {int n = timePoints.size();if (n > 1440) {return 0;}Collections.sort(timePoints);int ans = Integer.MAX_VALUE;int t0Minutes = getMinutes(timePoints.get(0));int preMinutes = t0Minutes;for (int i = 1; i < n; ++i) {int minutes = getMinutes(timePoints.get(i));ans = Math.min(ans, minutes - preMinutes); // 相邻时间的时间差preMinutes = minutes;}ans = Math.min(ans, t0Minutes + 1440 - preMinutes); // 首尾时间的时间差return ans;}public int getMinutes(String t) {return ((t.charAt(0) - '0') * 10 + (t.charAt(1) - '0')) * 60 + (t.charAt(3) - '0') * 10 + (t.charAt(4) - '0');}
}