從數字字符串示例中刪除微不足道的零

>從數字字符串中刪除微不足道的零：綜合指南

>本文解決了從不同編程語言中刪除數字字符串中微不足道的零的常見問題。我們將探索有效的方法來處理尾隨零，領先的零。最直接的方法涉及將字符串轉換為浮點數，然後返回到字符串。 這將在小數點之後自動刪除尾隨的零。 但是，此方法可能會引入非常大或非常小的科學符號。 一個更強大的解決方案利用字符串操作：

>如何從python中表示為字符串的數字中有效地刪除尾隨的零？直接的字符串操作避免了浮點表示的潛在高架和局限性，特別是對於可能引起科學符號的非常大的數量。

是什麼是從JavaScript中的小數小數字符串修剪的零算法的最佳算法是什麼？ A more controlled approach involves string manipulation similar to the Python example:

def remove_trailing_zeros(num_str):
    """Removes trailing zeros from a numeric string.

    Args:
        num_str: The input numeric string.

    Returns:
        The string with trailing zeros removed, or the original string if no trailing zeros are found.  Returns an error message if the input is not a valid numeric string.
    """
    try:
        float_num = float(num_str)
        return str(float_num)
    except ValueError:
        return "Invalid numeric string"


def remove_trailing_zeros_robust(num_str):
    """Removes trailing zeros from a numeric string without using float conversion.

    Args:
        num_str: The input numeric string.

    Returns:
        The string with trailing zeros removed, or the original string if no trailing zeros are found. Returns an error message if the input is not a valid numeric string.
    """
    try:
        if '.' not in num_str:
            return num_str  # No decimal point, nothing to remove

        integer_part, fractional_part = num_str.split('.')
        while fractional_part and fractional_part[-1] == '0':
            fractional_part = fractional_part[:-1]

        if fractional_part:
            return integer_part + '.' + fractional_part
        else:
            return integer_part
    except ValueError:
        return "Invalid numeric string"


print(remove_trailing_zeros("123.00"))  # Output: 123.0
print(remove_trailing_zeros("123.45"))  # Output: 123.45
print(remove_trailing_zeros("123.0"))   # Output: 123.0
print(remove_trailing_zeros("1000000000000000000000.00")) #Output: 1e+21 (Scientific Notation)
print(remove_trailing_zeros_robust("1000000000000000000000.00")) #Output: 1000000000000000000000
print(remove_trailing_zeros("abc"))     # Output: Invalid numeric string

This uses a regular expression to efficiently remove trailing zeros from the decimal part.

Are there any built-in functions or libraries in C# that can help remove leading and trailing zeros from numeric strings?remove_trailing_zeros_robust

C# doesn't have a single built-in function to remove both leading and trailing零同時。 但是，您可以將

>和

與適當的參數相結合以實現這一目標：

toFixed()

>此代碼有效地處理各種情況，包括只有零或小數點的情況。 請記住要處理電位

function trimInsignificantZeros(numStr) {
  if (!numStr.includes('.')) return numStr; //No decimal, nothing to trim

  const [integer, decimal] = numStr.split('.');
  let trimmedDecimal = decimal.replace(/0+$/, ''); //Remove trailing zeros

  if (trimmedDecimal === '') {
    return integer;
  } else {
    return integer + '.' + trimmedDecimal;
  }
}

console.log(trimInsignificantZeros("123.00")); // Output: 123
console.log(trimInsignificantZeros("123.45")); // Output: 123.45
console.log(trimInsignificantZeros("123.0"));  // Output: 123
console.log(trimInsignificantZeros("123"));    // Output: 123

如果輸入字符串可能為空或空字符串。

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