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, , . . , . , true false. , , , . , , . , . . , .

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/// <summary>

/// . for

/// </summary>

/// <param name="str"> </param>

/// <returns> true - </returns>

public bool Palindrom(string str) {

for (int i = 0, j = str.Length - 1; i < j; i++, j--)

if (str[i]!= str[j]) return (false);

Return (true);

} //Palindrom

While

while () , . , while. C# - . :

While()

. . - .

, , . , , . :

Do

While();

, while. , - . , . , . , , . do while . :

/// <summary>

/// : .

/// - .

/// .

/// </summary>

public void Loop() {

// string answer, text;

do {

//

Console.WriteLine(" ");

text = Console.ReadLine();

int i = 0, j = text.Length - 1;

while ((i < j) && (text[i] == text[j])) {

//

i++; j--;

}

if (text[i] == text[j]) Console.WriteLine(text + " - !");

else Console.WriteLine(text + " - !");

Console.WriteLine("? (yes/no)");

answer = Console.ReadLine();

} while (answer == "yes"); //

} //Loop

forEach

, ++, foreach, , . :





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