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Commit ec76554

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solves #702: Search in sorted array of unknown size in java
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‎README.md

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| 696 | [Count Binary Substrings](https://leetcode.com/problems/count-binary-substrings) | [![Java](assets/java.png)](src/CountBinarySubstrings.java) [![Python](assets/python.png)](python/count_binary_substrings.py) | |
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| 697 | [Degree of an Array](https://leetcode.com/problems/degree-of-an-array) | [![Java](assets/java.png)](src/DegreeOfAnArray.java) [![Python](assets/python.png)](python/degree_of_an_array.py) | |
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| 700 | [Search in a Binary Search Tree](https://leetcode.com/problems/search-in-a-binary-search-tree) | [![Java](assets/java.png)](src/SearchInBinarySearchTree.java) [![Python](assets/python.png)](python/search_in_binary_search_tree.py) | |
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| 702 | [Search In A Sorted Array of Unknown Size](https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size) | [![Java](assets/java.png)](src/SearchInSortedArrayOfUnknownSize.java) | |
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| 703 | [Kth Largest Element in a Stream](https://leetcode.com/problems/kth-largest-element-in-a-stream) | [![Java](assets/java.png)](src/KthLargestElementInAStream.java) [![Python](assets/python.png)](python/k_th_largest_element_in_a_stream.py) | |
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| 704 | [Binary Search](https://leetcode.com/problems/binary-search) | [![Java](assets/java.png)](src/BinarySearch.java) [![Python](assets/python.png)](python/binary_search.py) | |
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| 705 | [Design HashSet](https://leetcode.com/problems/design-hashset) | [![Java](assets/java.png)](src/DesignHashSet.java) [![Python](assets/python.png)](python/design_hash_set.py) | |
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// https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size
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// T: O(logN)
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// S: O(1)
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public class SearchInSortedArrayOfUnknownSize {
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public interface ArrayReader {
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int get(int index);
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}
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public int search(ArrayReader reader, int target) {
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int left = 0, right = 1, middle;
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while (reader.get(right) < target) {
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left = right;
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right *= 2;
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}
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while (left <= right) {
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middle = left + (right - left) / 2;
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if (reader.get(middle) == target) return middle;
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else if (reader.get(middle) < target) left = middle + 1;
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else right = middle - 1;
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}
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return -1;
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}
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}

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