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Lets say I have a string that consists of x unknown chars. How could I get char nr. 13 or char nr. x-14?
814
The indexOf() method returns the position of the first occurrence of specified character(s) in a string. Tip: Use the lastIndexOf method to return the position of the last occurrence of specified character(s) in a string.
The substr() method extracts a part of a string. The substr() method begins at a specified position, and returns a specified number of characters. The substr() method does not change the original string. To extract characters from the end of the string, use a negative start position.
Strings are ordered sequences of character data, 00:15 and the individual characters of a string can be accessed directly using that numerical index. String indexing in Python is zero-based, so the very first character in the string would have an index of 0 , 00:30 and the next would be 1 , and so on.
The Java String charAt(int index) method returns the character at the specified index in a string. The index value that we pass in this method should be between 0 and (length of string-1). For example: s. charAt(0) would return the first character of the string represented by instance s.
First make sure the required number is a valid index for the string from beginning or end , then you can simply use array subscript notation. use len(s) to get string length
>>> s = "python" >>> s[3] 'h' >>> s[6] Traceback (most recent call last): File "<stdin>", line 1, in <module> IndexError: string index out of range >>> s[0] 'p' >>> s[-1] 'n' >>> s[-6] 'p' >>> s[-7] Traceback (most recent call last): File "<stdin>", line 1, in <module> IndexError: string index out of range >>> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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