Rotate array right by 6 #27

Medium 30 pts New · no attempts yet csharp

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Rotate [1..7] right by 6 positions; print space-separated.

Static hints

Reverse whole, reverse first k, reverse rest

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Official solution

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        int[] a = { 1, 2, 3, 4, 5, 6, 7 };
        int k = 6 % a.Length;
        Array.Reverse(a); Array.Reverse(a, 0, k); Array.Reverse(a, k, a.Length - k);
        Console.WriteLine(string.Join(" ", a));
    }
}

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Explanation

Triple-reverse rotation trick.

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Rotate array right by 6 #27

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