character assigned 授予的船级符号
Removes the last assigned character from the formatted string.
从格式化字串移除上一个指定的字元。
Removes the assigned character at the specified position from the formatted string.
移除格式化字串中指定位置之间的指定字元。
Removes the last assigned character from the formatted string, and then outputs the removal position and descriptive information.
从带格式字符串中移除最后一个赋值的字符，然后输出移除位置和描述性信息。
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