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Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
The problem Remove Palindromic Subsequences Leetcode Solution states that you are given a string. The string consists of only two characters 'a' or 'b'. You are required to erase the whole string. There is a restriction that you can delete only a palindromic subsequence in one move. Find the minimum number of steps required to erase the whole string. Let us take a look at a few examples before jumping into the solution.
s = "ababa"
1
Explanation: Since the string is a palindrome. We can remove the whole string in a single move. Thus the answer is also 1.
s = "abb"
2
Explanation: In the first move, we remove "bb". In the second move, we remove "a". Thus we require at least 2 moves to erase the whole string.
Approach for Remove Palindromic Subsequences Leetcode Solution
The problem Remove Palindromic Subsequences Leetcode Solution is an observation one. It requires us to observe that the string consists of only two characters 'a' and 'b'. If we come across a palindrome, we simply return 1. Because it requires a single move to erase a whole palindrome. If we get an empty string, we should return 0. But other than these, there is only a single case, when we have a string that is not palindrome as a whole.
But since the string has only 'a' and 'b'. We will take at most 2 moves to remove all the characters. In the first move, we should remove all 'a's. In the second move, we remove all 'b's. Thus the answer to this p !=
www.tutorialcup.com/leetcode-solutions/remove-palindromic...
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
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Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Problem statement
In the problem "Find the Difference" we are given two strings s and t. String t is produced by randomly stuffing the characters of string s and adding one character at a random position.
our task is to find out the character which was added in string t.
Example
s = "abcd", t = "abcde"
e
Explanation:
After rearranging the characters of string t it becomes "abcde". As "abcd" is already present in string s, so the character that was added to t is "e".
Sorting Approach for Find the Difference Leetcode Solution
If we change our perspective to see the problem then sometimes it becomes easy to solve it. like here the problem says string t is generated by shuffling string s and adding one element at a random position. So, we can see this as string t is generated by adding a character at a random position in the string s. Now we only need to find out the position where the character of string s is not matching with the character of the string t and then we can return the character present at that position. So we will follow these steps:
- Sort both the string.
- Check character by character both the string and the point where they didn't match is the added character and that is the answer.
- If all characters matched then the character at the last position of string t is our answer.
Implementation
C++ code for Find the Difference
#include
using namespace std;
char findTheDifference(string s, string t) {
sort(s.begin(),s.
www.tutorialcup.com/leetcode-solutions/find-the-differenc...
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com
Amazon Appstore Developer Summit, Tuesday, 4th October at CodeNode, London. Images copyright www.edtelling.com