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Given a collection of intervals, merge all overlapping intervals.
For example,
Given[1,3],[2,6],[8,10],[15,18],
return[1,6],[8,10],[15,18]. ...
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输入n个整数,找出其中最小的K个数。例如输入4,5,1,6,2,7,3,8这8个数字,则最小的4个数字是1,2,3,4,。 ...
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Given any permutation of the numbers {0, 1, 2,..., N-1}, it is easy to
sort them in increasing order. But what if Swap(0, *) is the ONLY
operation that is allowed to use? For example, to sort {4, 0, 2, 1, 3}
we may apply the swap operations in the following way:
Swap(0, 1) => {4, 1, 2, 0, 3}
Swap(0, 3) => {4, 1, 2, 3, 0}
Swap(0, 4) => {0, 1, 2, 3, 4}
Now you are asked to find the minimum number of swaps need to sort the
given permutation of the first N nonnegative integers.
输入描述:
Each inp ...
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