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32 lines (29 loc) · 769 Bytes
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package leetcode.medium;
public class P_162 {
public int findPeakElementLB(int[] nums) {
int lo = 0;
int hi = nums.length;
while (lo < hi) {
final int mid = lo + hi >>> 1;
if (mid != nums.length - 1 && nums[mid] < nums[mid + 1]) {
lo = mid + 1;
} else {
hi = mid;
}
}
return lo;
}
public int findPeakElement(int[] nums) {
int lo = 0;
int hi = nums.length - 1;
while (lo < hi) {
final int mid = lo + hi + 1 >>> 1;
if (mid == 0 || nums[mid] > nums[mid - 1]) {
lo = mid;
} else {
hi = mid - 1;
}
}
return lo;
}
}