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Search33.java
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40 lines (30 loc) · 859 Bytes
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package week4;
public class Search33 {
public int search(int[] nums, int target) {
if(nums == null || nums.length == 0){
return -1;
}
int start = 0;
int end = nums.length - 1;
while (start <= end){
int mid = start + (end -start)/2;
if (nums[mid] == target){
return mid;
}
if(nums[mid] < nums[end]){
if(nums[mid] < target && target <= nums[end]){
start = mid + 1;
} else {
end = mid - 1;
}
} else {
if(nums[mid] > target && target >= nums[start]){
end = mid - 1;
} else {
start = mid + 1;
}
}
}
return -1;
}
}