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April 26, 2019 04:54
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Interpolation Search
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| interpolation_search(A[0...n-1], x): | |
| i = 0, j = n-1, lo = A[i], hi = A[j] | |
| if x < lo: | |
| return -1 | |
| if x >= hi: | |
| i = j | |
| while i < j: | |
| k = i + ((j - i) * (x - lo)) / (hi - lo) | |
| mid = A[k] | |
| if x > mid: | |
| i = k + 1 | |
| lo = mid | |
| elif x < mid: | |
| j = k - 1 | |
| hi = mid | |
| else: | |
| return k | |
| return (x != A[i]) ? -1 : i |
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