Created
October 14, 2014 15:18
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yukicoder No.39 桁の数字を入れ替え
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| (* http://yukicoder.me/problems/no/39 *) | |
| maxPos[li_] := Last[Position[li, Max[li]]][[1]] | |
| replace[li_] := ReplacePart[li, {maxPos[li] -> First[li], 1 -> Max[li]}] | |
| f[n_] := FromDigits[replace[IntegerDigits[n]]] |
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不正解
× f[9978] = 9978
○ f[9978] = 9987