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Solution.java
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53 lines (49 loc) · 1.67 KB
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public class Solution {
public int search(int[] nums, int target) {
if (nums == null || nums.length == 0)
return -1;
int left = 0;
int right = nums.length - 1;
while (left <= right) {
int mid = (left + right) >> 1;
if (nums[left] < nums[right]) {
if (nums[mid] < target) {
left = mid + 1;
} else if (nums[mid] > target) {
right = mid - 1;
} else {
return mid;
}
} else {
if (nums[mid] < target) {
if (nums[mid] < nums[left]) {
if (nums[left] < target) {
right = mid - 1;
} else if (nums[left] > target) {
left = mid + 1;
} else {
return left;
}
} else {
left = mid + 1;
}
} else if (nums[mid] > target) {
if (nums[mid] < nums[left]) {
right = mid - 1;
} else {
if (nums[left] < target) {
right = mid - 1;
} else if (nums[left] > target) {
left = mid + 1;
} else {
return left;
}
}
} else {
return mid;
}
}
}
return -1;
}
}