Number bonds are pairs of numbers that add up to a target number. Number bonds to 10 can be described in different ways. You can say '6 and 4 make 10', or '3 and 7 more equal 10', or even that 'double ...
Given an integer array nums, return an integer array counts where counts[i] is the number of smaller elements to the right of nums[i]. To the right of 5 there are 2 smaller elements (2 and 1). To the ...
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