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SearchII.java
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48 lines (44 loc) · 1.21 KB
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/**
* 81. 搜素旋转排序数组II
*/
public class SearchII {
public boolean search(int[] nums, int target) {
// if(nums.length==1){
// return nums[0]==target;
// }
int left=0, right=nums.length-1;
int mid;
while(left<right){
mid = (left+right)/2;
if(nums[mid]==target){
return true;
}
if(nums[mid]<target){
if(nums[left]==nums[mid]){
left++;
}else if(nums[left]<nums[mid]){
left=mid+1;
}else{
if(nums[right]>=target){
left=mid+1;
}else{
right=mid-1;
}
}
}else{
if(nums[right]==nums[mid]){
right--;
}else if(nums[right]>nums[mid]){
right=mid-1;
}else{
if(nums[left]<=target){
right=mid-1;
}else{
left=mid+1;
}
}
}
}
return nums[left]==target;
}
}