在字符串中使用数组
本文关键字：数组 字符串 | 更新日期: 2023-09-27 18:36:45
我想出了这个代码，它适用于老师想要的。计算空格，计算单词，执行子字符串搜索并单独计算字母并显示使用了哪些字母。
但是我需要将其转换为数组方法，而不是 600 行 do while 循环。我真的不知道该怎么做。谁能给我意见？
using System;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int a = 0;
int b = 0;
int c = 0;
int d = 0;
int e = 0;
int f = 0;
int g = 0;
int h = 0;
int i = 0;
int j = 0;
int k = 0;
int l = 0;
int m = 0;
int n = 0;
int o = 0;
int p = 0;
int q = 0;
int r = 0;
int s = 0;
int t = 0;
int u = 0;
int v = 0;
int w = 0;
int x = 0;
int y = 0;
int z = 0;
int A = 0;
int B = 0;
int C = 0;
int D = 0;
int E = 0;
int F = 0;
int G = 0;
int H = 0;
int I = 0;
int J = 0;
int K = 0;
int L = 0;
int M = 0;
int N = 0;
int O = 0;
int P = 0;
int Q = 0;
int R = 0;
int S = 0;
int T = 0;
int U = 0;
int V = 0;
int W = 0;
int X = 0;
int Y = 0;
int Z = 0;
int readChar = 0;
int word = 0;
int lower = 0;
int upper = 0;
string inputString ="";
char ch = ' ';
string findString = "";
int space = 0;
int startingPoint = 0;
int findStringCount = 0;
Console.Write("Please enter a string: ");
do{
readChar = Console.Read();
ch = Convert.ToChar(readChar);
if (ch.Equals(' '))
{
space++;
}
else if (Char.IsLower(ch))
{
lower++;
if (ch.Equals('a'))
{
a++;
}
else if (ch.Equals('b'))
{
b++;
}
else if (ch.Equals('c'))
{
c++;
}
else if (ch.Equals('d'))
{
d++;
}
else if (ch.Equals('e'))
{
e++;
}
else if (ch.Equals('f'))
{
f++;
}
else if (ch.Equals('g'))
{
g++;
}
else if (ch.Equals('h'))
{
h++;
}
else if (ch.Equals('i'))
{
i++;
}
else if (ch.Equals('j'))
{
j++;
}
else if (ch.Equals('k'))
{
k++;
}
else if (ch.Equals('l'))
{
l++;
}
else if (ch.Equals('m'))
{
m++;
}
else if (ch.Equals('n'))
{
n++;
}
else if (ch.Equals('o'))
{
o++;
}
else if (ch.Equals('p'))
{
p++;
}
else if (ch.Equals('q'))
{
q++;
}
else if (ch.Equals('r'))
{
r++;
}
else if (ch.Equals('s'))
{
s++;
}
else if (ch.Equals('t'))
{
t++;
}
else if (ch.Equals('u'))
{
u++;
}
else if (ch.Equals('v'))
{
v++;
}
else if (ch.Equals('w'))
{
w++;
}
else if (ch.Equals('x'))
{
x++;
}
else if (ch.Equals('y'))
{
y++;
}
else if (ch.Equals('z'))
{
z++;
}
}
else if (Char.IsUpper(ch))
{
upper++;
if (ch.Equals('A'))
{
A++;
}
else if (ch.Equals('B'))
{
B++;
}
else if (ch.Equals('C'))
{
C++;
}
else if (ch.Equals('D'))
{
D++;
}
else if (ch.Equals('E'))
{
E++;
}
else if (ch.Equals('F'))
{
F++;
}
else if (ch.Equals('G'))
{
G++;
}
else if (ch.Equals('H'))
{
H++;
}
else if (ch.Equals('I'))
{
I++;
}
else if (ch.Equals('J'))
{
J++;
}
else if (ch.Equals('K'))
{
K++;
}
else if (ch.Equals('L'))
{
L++;
}
else if (ch.Equals('M'))
{
M++;
}
else if (ch.Equals('N'))
{
N++;
}
else if (ch.Equals('O'))
{
O++;
}
else if (ch.Equals('P'))
{
P++;
}
else if (ch.Equals('Q'))
{
Q++;
}
else if (ch.Equals('R'))
{
R++;
}
else if (ch.Equals('S'))
{
S++;
}
else if (ch.Equals('T'))
{
T++;
}
else if (ch.Equals('U'))
{
U++;
}
else if (ch.Equals('V'))
{
V++;
}
else if (ch.Equals('W'))
{
W++;
}
else if (ch.Equals('X'))
{
X++;
}
else if (ch.Equals('Y'))
{
Y++;
}
else if (ch.Equals('Z'))
{
Z++;
}
}
if (((ch.Equals(' ') && (!inputString.EndsWith(" ")))||(ch.Equals(''r') && (!inputString.EndsWith(" "))))&&(inputString!=""))
{
word++;
}
inputString = inputString + ch;
} while (ch != ''r');
Console.ReadLine();
Console.WriteLine("Report on {0}",inputString);
Console.WriteLine("# of spaces {0}",space);
Console.WriteLine("# of lower {0}", lower);
Console.WriteLine("# of upper {0}", upper);
Console.WriteLine("# of word {0}", word);
Console.WriteLine("UPPERCASE");
if (A >= 1)
{
Console.WriteLine("A = {0}",A);
}
if (B >= 1)
{
Console.WriteLine("B = {0}",B);
}
if (C >= 1)
{
Console.WriteLine("C = {0}", C);
}
if (D >= 1)
{
Console.WriteLine("D = {0}", D);
}
if (E >= 1)
{
Console.WriteLine("E = {0}", E);
}
if (F >= 1)
{
Console.WriteLine("F = {0}", F);
} if (G >= 1)
{
Console.WriteLine("G = {0}", G);
}
if (H >= 1)
{
Console.WriteLine("H = {0}", H);
}
if (I >= 1)
{
Console.WriteLine("I = {0}", I);
}
if (J >= 1)
{
Console.WriteLine("J = {0}", J);
}
if (K >= 1)
{
Console.WriteLine("K = {0}", K);
}
if (L >= 1)
{
Console.WriteLine("L = {0}", L);
}
if (M >= 1)
{
Console.WriteLine("M = {0}", M);
}
if (N >= 1)
{
Console.WriteLine("N = {0}",N);
}
if (O >= 1)
{
Console.WriteLine("O = {0}",O);
}
if (P >= 1)
{
Console.WriteLine("P = {0}",P);
}
if (Q >= 1)
{
Console.WriteLine("Q = {0}",Q);
}
if (R >= 1)
{
Console.WriteLine("R = {0}",R);
}
if (S >= 1)
{
Console.WriteLine("S = {0}",S);
}
if (T >= 1)
{
Console.WriteLine("T = {0}",T);
}
if (U >= 1)
{
Console.WriteLine("U = {0}",U);
}
if (V >= 1)
{
Console.WriteLine("V = {0}",V);
}
if (W >= 1)
{
Console.WriteLine("W = {0}",W);
}
if (X >= 1)
{
Console.WriteLine("X = {0}",X);
}
if (Y >= 1)
{
Console.WriteLine("Y = {0}",Y);
}
if (Z >= 1)
{
Console.WriteLine("Z = {0}",Z);
}
Console.WriteLine("LOWERCASE");
if (a >= 1)
{
Console.WriteLine("a = {0}", a);
}
if (b >= 1)
{
Console.WriteLine("b = {0}", b);
}
if (c >= 1)
{
Console.WriteLine("c = {0}", c);
}
if (d >= 1)
{
Console.WriteLine("d = {0}", d);
}
if (e >= 1)
{
Console.WriteLine("e = {0}", e);
}
if (f >= 1)
{
Console.WriteLine("f = {0}", f);
} if (g >= 1)
{
Console.WriteLine("g = {0}", g);
}
if (h >= 1)
{
Console.WriteLine("h = {0}", h);
}
if (i >= 1)
{
Console.WriteLine("i = {0}", i);
}
if (j >= 1)
{
Console.WriteLine("j = {0}", j);
}
if (k >= 1)
{
Console.WriteLine("k = {0}", k);
}
if (l >= 1)
{
Console.WriteLine("l = {0}", l);
}
if (m >= 1)
{
Console.WriteLine("m = {0}", m);
}
if (n >= 1)
{
Console.WriteLine("n = {0}", n);
}
if (o >= 1)
{
Console.WriteLine("o = {0}", o);
}
if (p >= 1)
{
Console.WriteLine("p = {0}", p);
}
if (q >= 1)
{
Console.WriteLine("q = {0}", q);
}
if (r >= 1)
{
Console.WriteLine("r = {0}", r);
}
if (s >= 1)
{
Console.WriteLine("s = {0}", s);
}
if (t >= 1)
{
Console.WriteLine("t = {0}", t);
}
if (u >= 1)
{
Console.WriteLine("u = {0}", u);
}
if (v >= 1)
{
Console.WriteLine("v = {0}", v);
}
if (w >= 1)
{
Console.WriteLine("w = {0}", w);
}
if (x >= 1)
{
Console.WriteLine("x = {0}", x);
}
if (y >= 1)
{
Console.WriteLine("y = {0}", y);
}
if (z >= 1)
{
Console.WriteLine("z = {0}", z);
}
Console.WriteLine();
Console.Write("Please enter a substring ");
findString = Console.ReadLine();
if (findString.Length <= inputString.Length)
{
do
{
if (inputString.IndexOf(findString, startingPoint) != -1)
{
findStringCount++;
startingPoint = inputString.IndexOf(findString, startingPoint) + findString.Length;
}
} while (inputString.IndexOf(findString, startingPoint) != -1);
}
else
{
Console.WriteLine("Substring is too long!");
}
Console.WriteLine("The number of times that {0} is found in the text is {1}", findString, findStringCount);
Console.ReadLine();
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int[] counterArray = new int[123];
string myString;
int wordCounted = 0;
int result = 0;
//Prompt user and get value
Console.Write("Please enter a string: ");
myString =
Console.ReadLine();
//Word count
for (int i = 1; i < myString.Length; i++)
{
if (char.IsWhiteSpace(myString[i - 1]))
{
if (char.IsLetterOrDigit(myString[i]) ||
char.IsPunctuation(myString[i]))
{
wordCounted++;
}
}
}
if (myString.Length > 2)
{
wordCounted++;
}
//White space count
foreach (char countSpace in myString)
{
if (char.IsWhiteSpace(countSpace))
{
result++;
}
}
//Display words and space count,
Console.WriteLine("'nWORDS:'t't{0}", wordCounted);
Console.WriteLine("SPACES: 't{0}", result);
for (int x = 0; x < myString.Length; x++)
{
int myValue = Convert.ToInt32(myString[x]);
counterArray[myValue]++;
}
//Display uppercase letter count
Console.WriteLine("'nUPPERCASE LETTERS: ");
//Counting uppercase letter
for (int y = 65; y < 91; y++)
{
if (counterArray[y] > 0)
{
Console.WriteLine("'t't{0}: 't{1}", Convert.ToChar(y), counterArray[y]);
}
}
//Display lowercase letter count
Console.WriteLine("LOWERCASE LETTERS: ");
//Counting lowercase letter
for (int z = 97; z < 123; z++)
{
if (counterArray[z] > 0)
{
Console.WriteLine("'t't{0}: 't{1}", Convert.ToChar(z), counterArray[z]);
}
}
int startingPoint = 0;
int findStringCount = 0;
Console.Write("Please enter a substring ");
findString = Console.ReadLine();
Console.WriteLine("Press ENTER to exit...");
Console.ReadLine();
}
}
}
这是使用字典和 Linq 的一种方法。（编辑添加了大写的linq操作来填充A-Z以补充a-z）：
Dictionary<char, int> myLetters = new Dictionary<char, int>();
Enumerable.Range(0,26)
.Select( indx => (char)+('a' + indx))
.Union( Enumerable.Range(0,26)
.Select( indx => (char)+('A' + indx)))
.ToList()
.ForEach( chr => myLetters.Add( chr, 0));
myLetters['a'] = 2;
myLetters['Z'] = 3;
myLetters.ToList()
.ForEach( ml => Console.WriteLine("{0} : {1}", ml.Key, ml.Value));
/* Prints out
a : 2
b : 0
c : 0
...
Z : 3
*/
请注意，以上内容是出于学习目的，我实际上会一次性使用可枚举的 myLetters 作业，例如：
Dictionary<char, int> myLetters =
Enumerable.Range(0,26)
.Select( indx => (char)+('a' + indx))
.Union( Enumerable.Range(0,26)
.Select( indx => (char)+('A' + indx)))
.ToDictionary (letter => letter, letter => 0);
理想的解决方案是使用 Dictionary<char,int> ，但如果家庭作业特别需要数组，您可以使用字母字符的 ASCII 表示是串行的事实。 也就是说，A=65，b=66,...,Z=90和a=97，b=98,...,z=122。 例如：
var uppercase = new int[26];
var lowercase = new int[26];
if( ch >= 'A' && ch <= 'Z' )
uppercase[ch-'A']++;
if( ch >= 'a' && ch <= 'z' )
lowercase[ch-'a']++;
然后，当您将其打印出来时，您只需将indeces转换为键入char：
for( var i='A'; i<='Z'; i++ ) {
Console.WriteLine( (char)i + " = " + uppercase[i-'A'] );
}
我将把其余的实现留给你。
好吧，
恕我直言，获取字符数组的最简单方法是：
char[] alphaLower = "abcdefghijklmnopqrstuvwxyz".ToCharArray();
char[] alphaUpper = //same thing as above with uppercase letters;
此时，您可以在循环中进行计算。 像这样：
foreach(char c in alphaLower)
{
//possibly a nested foreach here to process each character of input against each char in the alphabet?
//write your calculation to console
}
看到你上面用短短 20 行代码重写的内容，我不会感到惊讶。 在下一次迭代中发布您提出的内容，我们将继续为您指明正确的方向。
尝试使用哈希表...他们键的位置是字母，值是它出现的次数
如果（ht.包含（{你的信}）） 将值递增 1
if (ht.ContainsKey(letter))
ht[letter] = Convert.ToInt32(ht[letter]) + 1;
else
ht.Add(letter, 1);
ASCII 空间对于大写字母是连续的，对于小写字母，大写字母 A 从十进制 65 开始。有关详细信息，请参阅 http://www.asciitable.com/
您应该为 ASCII 表下部的所有字符分配一个数组 （127）var countingchars = new int[128];
然后你循环字符串中的字符，并像在这样的循环中一样执行 sth：countingchars[（byte）currentchar]++;
每当你遇到（字节）当前字符== 32时，你应该增加字数
当你浏览了整个字符串时，从计数字符中获取空格[32]获得 65 - 90 的上限从 97-122 获取小写字母
希望这就足够了。
我把它留给你把它很好地放入 c#
希望这将有助于学习
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace HomeWork
{
class Alphabets
{
static void Main(string[] args)
{
string sentence = null;
string findString = null;
int numericCount;
int upperCount;
int lowerCount;
int specialCount;
int countBlankSpace;
int countWord;
Console.Write("Please enter a string: ");
sentence = Console.ReadLine();
numericCount = Regex.Matches(sentence, @"'d").Count;
upperCount = Regex.Matches(sentence, @"[A-Z]").Count;
lowerCount = Regex.Matches(sentence, @"[a-z]").Count;
specialCount = Regex.Matches(sentence, @"[!""£$%^&*())]").Count;
countBlankSpace = new Regex(" ").Matches(sentence).Count;
countWord = Regex.Matches(sentence, @"['S]+").Count;
Console.WriteLine("Report on {0}",sentence);
Console.WriteLine("# of spaces {0}", countBlankSpace);
Console.WriteLine("# of lower {0}", lowerCount);
Console.WriteLine("# of upper {0}", upperCount);
Console.WriteLine("# of word {0}", countWord);
Console.WriteLine("# of Special Characters {0}", specialCount);
Console.Write("Please enter a substring:");
findString = Console.ReadLine();
Alphabets.findSubString(findString, sentence);
Console.WriteLine("'nLowercase Letters 'n");
Alphabets.lowerLetters(sentence);
Console.WriteLine("'nUppercase Letters 'n");
Alphabets.upperLetters(sentence);
Console.ReadLine();
}
public static void lowerLetters(string sentence)
{
int[] upper = new int[(int)char.MaxValue];
// 1.
// Iterate over each character.
foreach (char t in sentence)
{
// Increment table.
upper[(int)t]++;
}
// 2.
// Write all letters found.
for (int i = 0; i < (int)char.MaxValue; i++)
{
if (upper[i] > 0 &&
char.IsLower((char)i))
{
Console.WriteLine("Letter: {0} = {1}",
(char)i,
upper[i]);
}
}
}
public static void upperLetters(string sentence)
{
int[] upper = new int[(int)char.MaxValue];
// 1.
// Iterate over each character.
foreach (char t in sentence)
{
// Increment table.
upper[(int)t]++;
}
// 2.
// Write all letters found.
for (int i = 0; i < (int)char.MaxValue; i++)
{
if (upper[i] > 0 &&
char.IsUpper((char)i))
{
Console.WriteLine("Letter: {0} = {1}",
(char)i,
upper[i]);
}
}
}
public static void findSubString(string findString, string sentence)
{
int findStringCount = 0;
int startingPoint = 0;
if (findString.Length <= sentence.Length)
{
do
{
if (sentence.IndexOf(findString, startingPoint) != -1)
{
findStringCount++;
startingPoint = sentence.IndexOf(findString, startingPoint) + findString.Length;
}
} while (sentence.IndexOf(findString, startingPoint) != -1);
}
else
{
Console.WriteLine("Substring is too long!");
}
Console.WriteLine("The number of times that {0} is found in the text is {1}", findString, findStringCount);
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int[] counterArray = new int[123];
string myString;
int wordCounted = 0;
int result = 0;
//Prompt user and get value
myString = getStringMethod();
//Word count
wordCounted = countWordsMethod(myString, wordCounted);
//White space count
result = spaceCounterMethod(myString, result);
//Display words and space count,
displayCountMethod(counterArray, myString, wordCounted, result);
//Display uppercase letter count
displayUpperMethod();
//Counting uppercase letter
uppserCaseMethod(counterArray);
//Display lowercase letter count
displayLowerMethod();
//Counting lowercase letter
lowerCaseMethod(counterArray);
Console.WriteLine("Press ENTER to exit...");
Console.ReadLine();
}
private static void displayLowerMethod()
{
Console.WriteLine("LOWERCASE LETTERS: ");
}
private static void displayUpperMethod()
{
Console.WriteLine("'nUPPERCASE LETTERS: ");
}
private static void lowerCaseMethod(int[] counterArray)
{
for (int z = 97; z < 123; z++)
{
if (counterArray[z] > 0)
{
Console.WriteLine("'t't{0}: 't{1}", Convert.ToChar(z), counterArray[z]);
}
}
}
private static void upp