Code Hunt SECTOR8 & SECTOR9（NestedLoops&1DArrays）
1.关于本博客的说明
Code Hunt 是我从CSDN上的一篇文章中无意间看到的：微软研究院正式发布编程学习游戏Code Hunt，游戏地址从这里进入。
本篇博客是游戏的 NESTED LOOPS 和 1D Arrays 部分的C#部分解题代码
2.SECTOR8：NESTED LOOPS
1）SECTOR8-01
求两个数字（含）间所有数字的阶乘和
SKILL RATING：3
using System;
public class Program {
public static int Puzzle(int i, int j)
{
int result=0;
for(int x=i;x<=j;x++)
{result+=fac(x);}
return result;
}
public static int fac(int x)
{
if(x==0)return 1;
if(x==1)return 1;
if(x==2)return 2;
return fac(x-1)*x;
}
}
SKILL RATING：?
这两个方法没有通过CodeHunt的编译
using System;
public class Program
{
public static int Puzzle(int i, int j)
{
double[] fac = new double[j + 1];
fac[0] = 1;
for (int x = 1; x < j + 1; x++)
{
fac[x] = fac[x - 1] * x;
}
double result = 0;
for (int y = i; y <= j; y++)
{
result += fac[y];
}
return (int)result;
}
}
using System;
public class Program
{
public static int Puzzle(int i, int j)
{
int fac = 1;
int result = 0;
for (int x = 1; x <= j; x++)
{
fac *= x;
if (x >= i) result += fac;
}
return result;
}
}
2）SECTOR8-02
输出字符串："# ## ### #### ..."
SKILL RATING：2
using System;
public class Program
{
public static string Puzzle(int n)
{
string output = "";
for (int i = 0; i < n; i++)
{
for (int j = 0; j < i + 1; j++)
{
output += "#";
}
output += " ";
}
return output;
}
}
SKILL RATING：2
using System;
public class Program
{
public static string Puzzle(int n)
{
char[] ch = new char[n + n * (n + 1) / 2];
for (int i = 0; i < ch.Length; i++)
{
ch[i] = '#';
}
int c1 = -1; int c2 = 2;
for (int j = 0; j < n; j++)
{
c1 = c1 + c2;
c2++;
ch[c1] = ' ';
}
return new string(ch);
}
}
3）SECTOR8-03
输出符合规律的字符串，如n=5时为：
"0_____ 01____ 012___ 0123__ 01234_ 012345"
SKILL RATING：3
using System;
public class Program
{
public static string Puzzle(int n)
{
string result = "";
for (int i = 0; i < n + 1; i++)
{
char[] ch = (new string('_', n + 1)).ToCharArray();
for (int j = 0; j <= i; j++)
{
ch[j] = (char)((int)'0' + j);
}
result += (new string(ch) + " ");
}
return result;
}
}
4）SECTOR8-04
输出字符串：共n个字符b[0]的字符串重复输出，每次输出时用字符'-'依次向后替换一个字
如n为3，b[0]为'&'时："-&& &-& &&-"
SKILL RATING：3
using System;
public class Program
{
public static string Puzzle(int n, string b)
{
string result = "";
for (int i = 0; i < n; i++)
{
char[] ch = (new string(b[0], n)).ToCharArray();
ch[i] = '-';
result += (new string(ch));
if (i != n - 1)
{
result += " ";
}
}
return result;
}
}
5）SECTOR8-05
给定字符串如"aaaa"重复输出，每次输出时用字符'_'依次向后替换一个字
结果如："_aaa a_aa aa_a aaa_"
SKILL RATING：3
using System;
public class Program
{
public static string Puzzle(string a)
{
string result = "";
for (int i = 0; i < a.Length; i++)
{
char[] ch = a.ToCharArray();
ch[i] = '_';
result += (new string(ch));
if (i != a.Length - 1)
{
result += " ";
}
}
return result;
}
}
6）SECTOR8-06
假设一个n*n的盒子，边用'$'表示，里面用'_'表示，如：
"$$$$$$" "$____$" "$____$" "$____$" "$____$" "$$$$$$"
将各行放到同一行，中间加上空格，输出如：
"$$$$$$ $____$ $____$ $____$ $____$ $$$$$$"
SKILL RATING：2
using System;
public class Program
{
public static string Puzzle(int size)
{
string result = "";
for (int i = 0; i < size; i++)
{
char[] ch;
if (i == 0 || i == size - 1)
{
ch = (new string('$', size)).ToCharArray();
}
else
{
ch = (new string('_', size)).ToCharArray();
ch[0] = '$';
ch[size - 1] = '$';
}
result += (new string(ch));
if (i != size - 1)
{
result += " ";
}
}
return result;
}
}
SKILL RATING：2
using System;
public class Program
{
public static string Puzzle(int size)
{
char[] ch = (new string(' ', size * size + size - 1)).ToCharArray();
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
if (i != 0 && i != size - 1 && j != 0 && j != size - 1)
{
ch[i * size + i + j] = '_';
}
else
{
ch[i * size + i + j] = '$';
}
}
}
return new string(ch);
}
}
7）SECTOR8-07
SKILL RATING：3
using System;
public class Program
{
public static string Puzzle(int height, int width)
{
char[] ch = (new string(' ', height * width + height - 1)).ToCharArray();
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
if ((i + j) % 2 == 0)
{
ch[i * width + i + j] = 'x';
}
else
{
ch[i * width + i + j] = 'o';
}
}
}
return new string(ch);
}
}
8）SECTOR8-08
输出字符串形如：1个1 2个2 3个3 ... 6个6 ... 3个3 2个2 1个1
"1 22 333 4444 55555 666666 55555 4444 333 22 1"
SKILL RATING：3
using System;
public class Program
{
public static string Puzzle(int number)
{
string result = new string((char)((int)'0' + number), number);
while (--number > 0)
{
result = result + " " + new string((char)((int)'0' + number), number);
result = new string((char)((int)'0' + number), number) + " " + result;
}
return result;
}
}
3.SECTOR9：1D ARRAYS
1）SECTOR9-01
SKILL RATING：3
using System;
public class Program
{
public static int Puzzle(int[] list, int i)
{
return list[i];
}
}
2）SECTOR9-02
SKILL RATING：3
using System;
public class Program
{
public static string Puzzle(string[] list)
{
return list[0] + list[list.Length - 1];
}
}
3）SECTOR9-03
SKILL RATING：1
using System;
public class Program
{
public static bool Puzzle(int[] list, int i)
{
for (int x = 0; x < list.Length; x++)
{
if (list[x] == i) return true;
}
return false;
}
}
SKILL RATING：？
下面这个方法在VS2012编译能通过，但在CodeHunt中不被承认
using System;
public class Program
{
public static bool Puzzle(int[] list, int i)
{
return list.Contains(i);
}
}
4）SECTOR9-04
SKILL RATING：1
using System;
public class Program
{
public static int[] Puzzle(int x)
{
int[] array = new int[10];
for (int i = 0; i < array.Length; i++)
{
array[i] = x;
}
return array;
}
}
SKILL RATING：1
using System;
public class Program
{
public static int[] Puzzle(int x)
{
return new int[] { x, x, x, x, x, x, x, x, x, x };
}
}
5）SECTOR9-05
SKILL RATING：1
using System;
public class Program
{
public static int[] Puzzle(int n)
{
int[] array = new int[n];
for (int i = 0; i < n; i++)
{
array[i] = i;
}
return array;
}
}
6）SECTOR9-06
SKILL RATING：1
using System;
public class Program
{
public static bool[] Puzzle()
{
bool[] b = new bool[10];
for (int i = 0; i < 10; i++)
{
b[i] = true;
}
return b;
}
}
SKILL RATING：3
using System;
public class Program
{
public static bool[] Puzzle()
{
return new bool[] { true, true, true, true, true, true, true, true, true, true };
}
}
7）SECTOR9-07
SKILL RATING：3
using System;
public class Program
{
public static string[] Puzzle(string s)
{
string[] sarr = new string[s.Length];
for (int i = 0; i < s.Length; i++)
{
sarr[i] = s[i].ToString();
}
return sarr;
}
}
8）SECTOR9-08
SKILL RATING：2
using System;
public class Program
{
public static int[] Puzzle(int i)
{
int[] array = new int[i + 1];
for (int x = 0; x <= i; x++)
{
array[x] = i - x;
}
return array;
}
}
9）SECTOR9-09
SKILL RATING：3
using System;
public class Program
{
public static int[] Puzzle(int[] numbers)
{
for (int i = 0; i < numbers.Length; i++)
{
numbers[i] = -numbers[i];
}
return numbers;
}
}
10）SECTOR9-10
SKILL RATING：1
using System;
public class Program
{
public static int[] Puzzle(int[] numbers)
{
int temp;
for (int i = 0; i < numbers.Length / 2; i++)
{
temp = numbers[i];
numbers[i] = numbers[numbers.Length - i - 1];
numbers[numbers.Length - i - 1] = temp;
}
return numbers;
}
}
SKILL RATING：1
using System;
public class Program
{
public static int[] Puzzle(int[] numbers)
{
int[] array = new int[numbers.Length];
for (int i = 0; i < numbers.Length; i++)
{
array[i] = number[numbers.Length - i - 1];
}
return array;
}
}
SKILL RATING：3
using System;
public class Program
{
public static int[] Puzzle(int[] numbers)
{
Array.Reverse(numbers);
return numbers;
}
}
11）SECTOR9-11
SKILL RATING：3
using System;
public class Program
{
public static string Puzzle(string s)
{
char[] ch = s.ToCharArray();
Array.Reverse(ch);
return new string(ch);
}
}
12）SECTOR9-12
数组向后循环移位，位数由amount指定
SKILL RATING：1
using System;
public class Program
{
public static int[] Puzzle(int[] numbers, int amount)
{
int[] array = new int[numbers.Length];
for (int i = 0; i < numbers.Length; i++)
{
int temp = i + amount;
if (temp > numbers.Length - 1) temp -= numbers.Length;
array[temp] = numbers[i];
}
return array;
}
}
13）SECTOR9-13
SKILL RATING：3
using System;
public class Program
{
public static int[] Puzzle(int[] numbers, int i, int j)
{
int temp = numbers[i];
numbers[i] = numbers[j];
numbers[j] = temp;
return numbers;
}
}
14）SECTOR9-14
SKILL RATING：2
using System;
public class Program
{
public static int[] Puzzle(int[] a, int[] b)
{
int[] array = new int[a.Length > b.Length ? a.Length : b.Length];
for (int i = 0; i < array.Length; i++)
{
if (i < a.Length && i < b.Length)
{
array[i] = a[i] + b[i];
}
else if (i >= a.Length)
{
array[i] = b[i];
}
else
{
array[i] = a[i];
}
}
return array;
}
}