reverse

I have been trying to write a function that takes two pointers (an input and an output) and writes the bytes from the input into the output in reverse order. So far I have not been able to make it work correctly. procedure ReverseBytes(Source, Dest: Pointer; Size: Integer); var Index: Integer; begin Move(Pointer(LongInt(Source) + Index)^, Pointer(LongInt(Dest) + (Size - Index))^ , 1); end; Can anyone please suggest a better way of doing this. Thanks. procedure ReverseBytes(Source, Dest: Pointer; Size: Integer); var Index: Integer; begin for Index := 0 to Size - 1 do Move(Pointer(LongInt(Source

How can you define a function to reverse a list in Scheme by using foldr and foldl ? What we want is a succinct solution to reverse a list in Scheme using a foldl call and a different solution using a foldr call, as defined: (define (foldl operation lst initial) (if (null? lst) initial (foldl operation (cdr lst) (operation (car lst) initial)))) and (define (foldr operation lst initial) (if (null? lst) initial (operation (car lst) (foldr operation (cdr lst) initial)))) The astute person will observe that the foldl implementation is tail-recursive because the returned value is computed as each

I am trying to solve the following problem but how do write the method that accepts String as an argument? Write a method named printReverse that accepts a String as an argument and prints the characters in the opposite order. If the empty string is passed as an argument, the method should produce no output. Be sure to write a main method that convincingly demonstrates your program in action. Do not use the reverse method of the StringBuilder or StringBuffer class! So far I have solved it in a easier manner: import java.util.Scanner; class ReverseString { public static void main(String args[])

I have a LinearLayout and on some devices all the views are reversed. The Good Version: [b1] [b2] [b3] On some devices: [b3] [b2] [b1] Why does that happen and how can I fix it? If you're targeting and testing on API level >=17 (i.e. Android 4.2) this might be caused by RTL support, as described here . If you don't want this, you can either change android:layoutDirection for each particular view (and since the default is inherit , the root view should suffice) or you can disable it for the whole application by setting android:supportsRtl="false" in the AndroidManifest.xml file. Or, you could

I want a function that takes a string (NOT a vector) and reverses the words in that string. For example, rev_sentence("hi i'm five") ## [1] "five i'm hi" I have a function that reverses individual characters, but not something that will reverse a string that's essentially a sentence. In R , We can use strsplit to split at one or more spaces and then reverse the elements and paste it together sapply(strsplit(str1, "\\s+"), function(x) paste(rev(x), collapse=" ")) #[1] "five i'm hi" If there is only a single string, then paste(rev(strsplit(str1, "\\s+")[[1]]), collapse= " ") #[1] "five i'm hi"

For some reason when I apply the reverse method, nothing changes. public static string ReverseString(string word) { char[] myArray = word.ToCharArray(); myArray.Reverse(); string ans = string.Join("", myArray); return ans; } Try Array.Reverse(myArray) instead of myArray.Reverse() . You are confusing Enumerable.Reverse and Array.Reverse methods. IEnumerable<char>.Reverse : Returns a new reversed array without changing the old array myArray = myArray.Reverse(); Array.Reverse : A Void method that will reverse the input array Array.Reverse(myArray); Perhaps you're confusing the method you're using

Here is my fiddle: http://jsfiddle.net/sepoto/Zgu9J/1/ I'm starting with a reverse function: function reverseArr(input) { var ret = new Array; for(var i = input.length-1; i >= 0; i--) { ret.push(input[i]); } //I tried changing the return value to //return ret.slice(0) which has no effect on making //an independent copy return ret; } The second array I make pointOrigins2 is not an independent copy of pointOrigins1. In other words modifying pointOrigins2 is also modifying pointOrigins1 which is not what I need to achieve. From my reading on StackOverflow I have tried a few options such as using