#823Easy#43 in IBM's list· asked at 6 companies
Last Stone Weight
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What we know
Example 1
Input: stones = [2,7,4,1,8,1] Output: 1
8 and 7 -> 1; 4 and 2 -> 2; 2 and 1 -> 1; 1 and 1 -> 0; one stone of weight 1 is left.
Example 2
Input: stones = [1] Output: 1
Constraints
- •
1 <= stones.length <= 30 - •
1 <= stones[i] <= 1000