recursion

问题 I have an array with all categories stored in it: $allCatArray = array( ['departments/outdoor/123123/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/123123/' [pid] => 'departments/outdoor/' [name] => 'Child Category Name' ) ['departments/outdoor/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/' [pid] => '0' [name] => 'Main Category Name' ) I need detect the highest category in hierarchy when i have id of lower category in hierarchy. So I have this function:

问题 I have an array with all categories stored in it: $allCatArray = array( ['departments/outdoor/123123/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/123123/' [pid] => 'departments/outdoor/' [name] => 'Child Category Name' ) ['departments/outdoor/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/' [pid] => '0' [name] => 'Main Category Name' ) I need detect the highest category in hierarchy when i have id of lower category in hierarchy. So I have this function:

问题 I have an array with all categories stored in it: $allCatArray = array( ['departments/outdoor/123123/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/123123/' [pid] => 'departments/outdoor/' [name] => 'Child Category Name' ) ['departments/outdoor/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/' [pid] => '0' [name] => 'Main Category Name' ) I need detect the highest category in hierarchy when i have id of lower category in hierarchy. So I have this function:

问题 I have an array with all categories stored in it: $allCatArray = array( ['departments/outdoor/123123/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/123123/' [pid] => 'departments/outdoor/' [name] => 'Child Category Name' ) ['departments/outdoor/'] => stdClass Object ( [i] => 1 [id] => 'departments/outdoor/' [pid] => '0' [name] => 'Main Category Name' ) I need detect the highest category in hierarchy when i have id of lower category in hierarchy. So I have this function:

问题 I am trying to use a recursive program to print out a sequence that starts at one value, goes to a max, then back down to the original value. The program can't use static or global variables, or use an array. Ex: f(5,10) prints 5,6,7,8,9,10,9,8,7,6,5 I think I have the concept down, at least I think I do, but I can't figure out how to print the variable from the recursive method to print the sequence. Here is my program: public class recursive { public static int f(int a, int b) { System.out

问题 I'm trying to implement a method that takes as a parameter: target string and an array with string values in it. The goal is to check if it is possible to construct with array's value, the given target string.The words in array can be used as many times as we want. Example: console.log(canConstruct("abcdef", ["ab", "abc", "cd", "def", "abcd"])); // suppose to return true As we can see, by concatenating "abc" and "def" we get the target string of "abcdef" Here is my function implementation:

问题 I want to take in a list with nested lists. Then print the highest value of index 0 or 2 in the list and the lowest value of index 0 or 2, through using recursion. This is what I got so far: lst = [1, 5, [7, 10, []]] def high_low(my_list): new_lst = [] if not my_list: print max(new_lst) print min(new_lst) elif isinstance(my_list[0], int): return new_lst.append(my_list[0]) + high_low(my_list[2:]) elif isinstance(my_list[0], list): return new_lst.append(max(my_list[0])) + high_low(my_list[2:])

问题 I want to take in a list with nested lists. Then print the highest value of index 0 or 2 in the list and the lowest value of index 0 or 2, through using recursion. This is what I got so far: lst = [1, 5, [7, 10, []]] def high_low(my_list): new_lst = [] if not my_list: print max(new_lst) print min(new_lst) elif isinstance(my_list[0], int): return new_lst.append(my_list[0]) + high_low(my_list[2:]) elif isinstance(my_list[0], list): return new_lst.append(max(my_list[0])) + high_low(my_list[2:])

问题 I am having two WPF (from the standard set) widgets A and B. When I change some property of A it should be set on B, when it is change in B it should be set on A. Now I have this ugly recursion --> I change A, so code changes B, but since B is changed, it changes A, so it changes B... You have the picture. How to avoid this recursion the most "standard" way? Naive deleting and adding event handlers does not work, and checking if the new value is the same as old value is not applicable here

问题 I am having two WPF (from the standard set) widgets A and B. When I change some property of A it should be set on B, when it is change in B it should be set on A. Now I have this ugly recursion --> I change A, so code changes B, but since B is changed, it changes A, so it changes B... You have the picture. How to avoid this recursion the most "standard" way? Naive deleting and adding event handlers does not work, and checking if the new value is the same as old value is not applicable here