shift

问题 So currently, my code looks like this (thanks to help in another post I made) phrase = raw_input("Enter text to Cipher: ") shift = int(raw_input("Please enter shift: ")) result = ("Encrypted text is: ") for character in phrase: #Loops through phrase and shows ascii numbers, example: hello is: 104,101,108,108,111 x = ord(character) #adds a shift to each character so if shift is 1 'hello' becomes: ifmmp 105,102,109,109,112 result += chr(x + shift) print "\n",result,"\n" The problem is, if I

问题 is it possible to easily 'rotate' an array in PHP ? Like this: 1, 2, 3, 4 -> 2, 3 ,4 ,1 Is there some kind of built-in PHP function for this? 回答1: Most of the current answers are correct, but only if you don't care about your indices: $arr = array('foo' => 'bar', 'baz' => 'qux', 'wibble' => 'wobble'); array_push($arr, array_shift($arr)); print_r($arr); Output: Array ( [baz] => qux [wibble] => wobble [0] => bar ) To preserve your indices you can do something like: $arr = array('foo' => 'bar',

问题 I have an array of objects in Java, and I am trying to pull one element to the top and shift the rest down by one. Assume I have an array of size 10, and I am trying to pull the fifth element. The fifth element goes into position 0 and all elements from 0 to 5 will be shifted down by one. This algorithm does not properly shift the elements: Object temp = pool[position]; for (int i = 0; i < position; i++) { array[i+1] = array[i]; } array[0] = temp; How do I do it correctly? 回答1: Assuming your

问题 I'm trying to make a shiftregister in vhdl. My issue is when I try to store values in the regisgter. This is the code that's causing trouble: architecture behave of chan_mod is signal adc_shfreg : std_logic_vector(15 DOWNTO 0); signal dac_shfreg : std_logic_vector(15 DOWNTO 0); begin Rcv_adc: process(mclk, reset) begin if rising_edge(mclk) then if (reset = '0') then adc_out <= "0000000000000000"; elsif(chan_on = '1' AND subcycle_cntr = "01" AND chan_sel = '0' AND bit_cntr < 16) then adc

问题 I want to shift to the right an entire column, fill with NAN the first column and drop the last column: df0: A B C D 2013-12-31 10 6 6 5 2014-01-31 11 7 5 5 2014-02-28 15 8 8 8 into df1: A B C D 2013-12-31 NaN 10 6 6 2014-01-31 NaN 11 7 5 2014-02-28 NaN 15 8 8 My solution is to split the columns into Series and then recompose the dataframe. Is there a more efficient way? 回答1: shift shift the data by rows. Here's my trick df.T.shift().T Update It's a bug when passing axis as 1. It's been

问题 I am near to end in my project but stuck at some point. I can not resolve the problem After deciding VHDL is having a hard time shifting indexes of arrays, I decided to change my shifter module. Now it is properly compiling and the RTL schematic seems true, but unfortunately I used a rather non-innovative way to shift the scancodes. I defined an 64bit std_logic_vector that can hold up to 8 scancodes, and then parsed the 4 MSBmost bytes of this vector, and directed them to seven segment

问题 I have a start value in column "A" (02) And an end value in column "B" (06) In column "C" I'd like to list the range of number sequentially using the start and end values in columns "A" and "B". However I'd also like to shift the cell data down to stop any data overlapping. To go one step further, I don't know if this is possible, but it would help if the data from the original row could be duplicated in each of the new rows that have been created with the sequential values. Edit: This code

问题 I was reading this document: http://www.fadden.com/techmisc/hdc/lesson11.htm In it he stated: Problem is, we don't know how long these are. So, we encode the length with the unary coding we looked at first (colons added for clarity): value binary coding 1 1: 2 01:0 3 01:1 4 001:00 5 001:01 16 00001:0000 64 0000001:000000 256 000000001:00000000 This method is actually floor(log i) zeros, followed by a 1, followed by the binary code without the leading 1. Since the first part is a unary count,

问题 I want to shift a vector by non-integer shift, linear interpolation seems to be not very accurate so I'm trying to use sinc interpolation by the following code which uses Fourier transform. function y = fshift(x,s) % FSHIFT Fractional circular shift % Syntax: % % >> y = fshift(x,s) % % FSHIFT circularly shifts the elements of vector x by a (possibly % non-integer) number of elements s. FSHIFT works by applying a linear % phase in the spectrum domain and is equivalent to CIRCSHIFT for integer

问题 Does anyone know an efficient way to right circular-shift a matrix? Btw, the matrix is binary but a method to solve a non-binary matrix is also fine. Right now, I'm thinking of implementing a circular array for the rows of my matrix and updating each row whenever a shift operation is required. Another method, I was considering was implementing a vector of pointers to columns (of the matrix) represented by vectors and swapping them around when a shift operation occurs. E.g. 1 2 3 4 5 6 7 8 9