int lower_bound(int* arr, int numsSize, int tar) {
int left = 0, right = numsSize;
int mid = left + (right - left) / 2;
while(left < right) {
mid = left + (right - left) / 2;
if(arr[mid] < tar) {
left = mid + 1;
} else {
right = mid;
}
}
return left;
}
int search(int* nums, int numsSize, int target) {
int res = lower_bound(nums, numsSize, target);
if(res < numsSize) {
if(nums[res] == target) {
return res;
}
}
return -1;
}
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