It depends on the size of the objects you are recursing. If you are doing recursion over objects that are already in memory, memory impact will be neglible because it’s simply using the same objects that are already in memory over and over. Just see which objects/variables you can re-use to keep memory footprint low. … Read more
#include <stdio.h> char *StrrchrR(const char *s, int c, char *find){ if(s==NULL) return NULL; if(*s == ‘\0’) return (c == ‘\0’) ? (char*)s : find; return StrrchrR(s + 1, c, *s == c ? (char*)s : find); } char *Strrchr(const char *s, int c){ return StrrchrR(s, c, NULL); } /* char *Strrchr(const char *s, int c){ … Read more
You never alter self.n, so it’ll always be greater or equal to 1. You created an endless loop. It’s set to 1 in __init__ so self.n >= 1 is true each time you test. You should not use a local variable and a parameter to track the current state of the factorial function. Pick one … Read more
if (n == 0) not if (n=0) check your syntax careful. solved Unable to print recursive fibonacci sequence correctly
Use return here, Change this if (substr($randomString, 0, 1) != 2) { // if doesn’t start with 2 generateRandomString($length, $alpha, $numeric); // try again } to if (substr($randomString, 0, 1) != 2) { // if doesn’t start with 2 return generateRandomString($length, $alpha, $numeric); // try again } 1 solved Recursive function doesn’t return [duplicate]
Imagine you wrote such function: public static int square(int x) { pow(x, 2); return x; } It will compute the square of x. But then computed square will not affect anything and the function will return just x. Now look carefully at your code if (i == 5){ return i; } else { something(i + … Read more
You’re trying to declare one method inside another. That’s not valid in C#. You could use an anonymous function, but it would be relatively painful. Just move the Print100 method (and ideally rename it at the same time) outside Main, and call it from Main. 2 solved Recursion Code Error in c#? [closed]
You need to end the recursion at some point: int factorial(int b) /*Function definition*/ { if (b == 0) return 1; return b*factorial(b-1); } 2 solved why does this recursive program for factorial not work? [closed]
It would be O(N). The general approach to doing complexity analysis is to look for all significant constant-time executable statements or expressions (like comparisons, arithmetic operations, method calls, assignments) and work out an algebraic formula giving the number of times that they occur. Then reduce that formula to the equivalent big O complexity class. In … Read more
You might transform: bool estCarre(int a) { for (int i = 1; i <= a; i++) { if (i*i==a){ return true; } if(i*i>a){ return false; } } return false; } into bool estCarre(int a, int i = 1) { // Loop content: if (i * i == a) { return true; } if (i * … Read more
okay it’s really simple. Just consider these two points before moving on: point 1: When a function calls another function, the first function that calls the other is known as the “caller” function, the function getting called is known as the “callee”. point 2: when a callee is called, code execution stops at the point … Read more
To answer your question, yes it would make a huge difference if you removed the return statement from your return children.get(i).search(x); line of code. The method signature: public Node search(int x) specifically states that it will return a node value, therefore the end result of this method must return a Node, or a null value. … Read more
W.l.o.g. we say n>=m and choose m to be of the form 2^x. (If m is arbitrary <= n as well it only means that we apply the same approach to a second rectangle that is n times m-2^x in size, where x=int_floor(ld(m)) and ld is log to the base of 2 of course.) The … Read more
Let’s construct our number that doesn’t have three consecutive ones from left to right. It necessarily starts with at most two 1s, so it starts with either no 1s, a single 1, or two 1s. In other words, our number starts with either 0, 10 or 110. In all of these cases, the only restriction … Read more
list_sum_recursive doesn’t return a list; it returns the sum of the values in its argument: list_sum_recursive([]) == 0 list_sum_rescursive([1]) == 1 + list_sum_recursive([]) == 1 + 0 == 1 list_sum_rescursive([1, 2]) == 1 + list_sum_recursive([2]) == 1 + (2 + list_sum_recursive([])) == 1 + (2 + 0) == 1 + 2 == 3 If you … Read more