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539.java
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539.java
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__________________________________________________________________________________________________
sample 1 ms submission
class Solution {
public int time2int(String str) {
int hour = (str.charAt(0) - '0') * 10 + (str.charAt(1) - '0');
int min = (str.charAt(3) - '0') * 10 + (str.charAt(4) - '0');
return hour * 60 + min;
}
public int findMinDifference(List<String> timePoints) {
int n = timePoints.size();
boolean[] t = new boolean[24 * 60];
for (int i = 0; i < n; i++) {
int c = time2int(timePoints.get(i));
if (t[c]) return 0;
else t[c] = true;
}
int min = 24 * 60;
int ans = 24 * 60;
int last = -1;
for (int i = 0; i < 24 * 60; i++)
if (t[i]) {
min = Math.min(min, i);
if (last >= 0)
ans = Math.min(ans, i - last);
last = i;
}
ans = Math.min(ans, 24 * 60 - last + min);
return ans;
}
}
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sample 34904 kb submission
class Solution {
public int findMinDifference(List<String> timePoints) {
int res = Integer.MAX_VALUE, diff = 0, n = timePoints.size();
timePoints.sort(String::compareTo);
for (int i = 0; i < timePoints.size(); i++) {
String t1 = timePoints.get(i), t2 = timePoints.get((i + 1) % n);
int h1 = (t1.charAt(0) - '0') * 10 + t1.charAt(1) - '0';
int m1 = (t1.charAt(3) - '0') * 10 + t1.charAt(4) - '0';
int h2 = (t2.charAt(0) - '0') * 10 + t2.charAt(1) - '0';
int m2 = (t2.charAt(3) - '0') * 10 + t2.charAt(4) - '0';
diff = (h2 - h1) * 60 + (m2 - m1);
if (i == n - 1) diff += 24 * 60;
res = Math.min(res, diff);
}
return res;
}
}
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