试题与答案

若关键字是非负整数,快速排序、归并排序、堆排序和基数排序中 (54) 最快。若要求辅

题型:单项选择题

题目:

若关键字是非负整数,快速排序、归并排序、堆排序和基数排序中 (54) 最快。若要求辅助空间为O(1),应选 (55)

54()

A.快速排序

B.归并排序

C.堆排序

D.基数排序

答案:

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When I was little, my mother began selling flowers in Camden Market. She couldn’t  36 me at home on my own,   37  I had to go to the market with her.
  38 , I didn’t have to do anything. I just sat there, and my mother told me jokes and stories so I didn’t get   39 .When I got older, I gave my mother a hand and I really enjoyed it.
Then one year, my grandma gave me a book for Christmas. It was all about making candles and I loved it. I was 14, and I didn’t have to go to the market  40 because my mother could leave me at home on my own. I  41 my free time making candles of all shapes and sizes. I made  42 them.
One day, my mother was ill, so I had to go to the market on my own. I decided to  43 some candles with me and see  44 I could sell them. They  45 in 20 minutes! The next week, my mother gave me some money to buy some wax (蜡) to make more candles. They were sold out really quickly, too.
Ten months later, we decided  46 flowers. My mother and I couldn’t make enough candles during the week, so some of my friends started to help us. I paid them one pound  47 every candle, and we   48 sell them for three or four times. It was fun and my friends worked with me in the market.
At the age of 22, my uncle  49 me some money and I opened my first shop in Portobello Road. Since then, I’ve  50 looked back, even in difficulties. In the first store, we only sold candles, but now we sell everything from the designer, furniture to paintings. Oh, and candles, of course.
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A.forgotB.leaveC.remember D.take
小题2:
A.becauseB.soC.whyD.instead
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A.To begin withB.To begin toC.To start toD.Started
小题4:
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小题7:
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小题8:
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小题9:
A.thatB.whichC.whoD.if
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A.came outB.clean outC.were sold outD.sold out
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小题12:
A.forB.onC.withD.in
小题13:
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