character

问题 I have the following data set data date PX_LAST.USGG10YR Index PX_LAST.GSWISS10 Index 1 2012-12-31 1.7574 0.526 2 2013-01-31 1.9849 0.789 3 2013-02-28 1.8756 0.698 4 2013-03-29 1.8486 0.716 5 2013-04-30 1.6717 0.570 6 2013-05-31 2.1282 0.722 7 2013-06-28 2.4857 1.027 8 2013-07-31 2.5762 1.023 9 2013-08-30 2.7839 1.069 10 2013-09-30 2.6100 1.021 The class of the date column is > class(data[,1]) [1] "POSIXct" "POSIXt" The class of the other two columns is class(data[,2]) [1] "numeric" class

问题 I have the following data set data date PX_LAST.USGG10YR Index PX_LAST.GSWISS10 Index 1 2012-12-31 1.7574 0.526 2 2013-01-31 1.9849 0.789 3 2013-02-28 1.8756 0.698 4 2013-03-29 1.8486 0.716 5 2013-04-30 1.6717 0.570 6 2013-05-31 2.1282 0.722 7 2013-06-28 2.4857 1.027 8 2013-07-31 2.5762 1.023 9 2013-08-30 2.7839 1.069 10 2013-09-30 2.6100 1.021 The class of the date column is > class(data[,1]) [1] "POSIXct" "POSIXt" The class of the other two columns is class(data[,2]) [1] "numeric" class

问题 I have seen Questions and Answers about obtaining the code point number of a Unicode character in Java. For example, the Question How can I get a Unicode character's code?. But I want the opposite: given an integer number, how do I get text of that character assigned to that code point number? The char primitive data type is of no use, being limited to only the Basic Multilingual Plane of the Unicode character set. That plane represents approximately the first 64,000 characters defined in

问题 I have seen Questions and Answers about obtaining the code point number of a Unicode character in Java. For example, the Question How can I get a Unicode character's code?. But I want the opposite: given an integer number, how do I get text of that character assigned to that code point number? The char primitive data type is of no use, being limited to only the Basic Multilingual Plane of the Unicode character set. That plane represents approximately the first 64,000 characters defined in

问题 Actually, I can easily found a similar question in Google, but it still can not solve my question. How to prevent non-numeric input in C? The upper-link is like a similar case. Here is my code #include <stdio.h> int main() { int n; printf("Enter 1 or 2?\n"); scanf("%d", &n); while(n != 1 && n != 2) { printf("Please do not enter other characters\n"); printf("Enter 1 or 2?\n"); scanf("%d", &n); } } I hope if users enter other numbers(e.g. 1, 45, 656), characters (e.g. a, f, u, e), or string(e.g

问题 In Excel When I sort the texts in ascending order, results shows as below. Text with the underscore character precedes the others. And in Excel cell, when I type in ="_" < "A", then "True" shows as expected. C10_ C10A C20_ C20A But, In Oracle, when I sort in ascending order, results shows as below. (I guess, Oracle treats '_' < 'A' False) C10A C10_ C20A C20_ How can I make Oracle sort the list exactly as Excel does? I have changed ASC to DESC, but the result was not what I expect. My sorting

问题 I have this piece of code which is intended to split strings into an array of strings using CHUNK_SIZE as the size of the split, in bytes (I'm doing this for paginating results). This works in most cases when characters are 1 byte, but when I have a multi-byte character (such as for example 2-byte french characters (like é) or 4 byte chinese characters) at precisely the split location, I end up with 2 unreadable characters at the end of my first array element and at the start of the second

问题 in a string like "phone" i want to know the neighbour of the character 'o' in this case 'h' and 'n' i tryed with a String Iterator but that gives me either before or after and with charAt() i will be out of range by -1 or endless loop String s = textArea.getText(); for( int i = 0; i < s.length(); i++) { char ch = s.charAt(i); char tz = s.charAt(i--); System.out.print(ch); if(ch == 'n') { System.out.print(tz); break; } } 回答1: you could try something like this. Of course, you can still do

问题 I have this piece of code which is intended to split strings into an array of strings using CHUNK_SIZE as the size of the split, in bytes (I'm doing this for paginating results). This works in most cases when characters are 1 byte, but when I have a multi-byte character (such as for example 2-byte french characters (like é) or 4 byte chinese characters) at precisely the split location, I end up with 2 unreadable characters at the end of my first array element and at the start of the second

问题 in a string like "phone" i want to know the neighbour of the character 'o' in this case 'h' and 'n' i tryed with a String Iterator but that gives me either before or after and with charAt() i will be out of range by -1 or endless loop String s = textArea.getText(); for( int i = 0; i < s.length(); i++) { char ch = s.charAt(i); char tz = s.charAt(i--); System.out.print(ch); if(ch == 'n') { System.out.print(tz); break; } } 回答1: you could try something like this. Of course, you can still do