Minimum Number of Operations to Convert Time
给两个string， 里面是二十四制的小时，求最小的步骤通过1、5、10、60把string current 变成 correct。
先变成数字， 然后贪婪从大到小。
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class Solution { public int convertTime(String current, String correct) { String[] strs = current.split(":"); String[] ss = correct.split(":"); int curSum = Integer.valueOf(strs[0])*60 + Integer.valueOf(strs[1]); int corSum = Integer.valueOf(ss[0])*60 + Integer.valueOf(ss[1]); int diff = corSum - curSum; int res = 0; res += (diff / 60); diff = diff % 60; res += (diff / 15); diff = diff % 15; res += (diff / 5); diff = diff % 5; res += diff; return res; } } |