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| """ | |
| 给定一个有序列表l，用最快的方法找出数x在其中的位置 | |
| """ | |
| l = [1, 3, 4, 12, 34, 62, 77, 79, 88, 90, 99] | |
| x = 77 | |
| """ | |
| 思路，先找出数组l的中间值，和x比较大小，若比x大，则x在l的前半部分， | |
| 再在l的前半部分的列表ll中，按以上方法判断x的位置 | |
| """ |
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