Remove All Adjacent Duplicates In String | Removing consecutive duplicates | Stack Playlist Hindi

This is the video under the series of DATA STRUCTURE & ALGORITHM in a STACK Playlist. Now we are going to solve a stack problem in leetcode Remove All Adjacent Duplicates In String or Removing consecutive duplicates from GeeksForGeeks.
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► 1047. Remove All Adjacent Duplicates In String
You are given a string s consisting of lowercase English letters. A duplicate removal consists of choosing two adjacent and equal letters and removing them.
We repeatedly make duplicate removals on s until we no longer can.
Return the final string after all such duplicate removals have been made. It can be proven that the answer is unique.
Input: s = "abbaca"
Output: "ca"
Explanation:
For example, in "abbaca" we could remove "bb" since the letters are adjacent and equal, and this is the only possible move. The result of this move is that the string is "aaca", of which only "aa" is possible, so the final string is "ca".
►Remove All Adjacent Duplicates In String: leetcode.com/problems/remove-...
► Code In this video: github.com/Prince-1501/Hello_...
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[@sumitrodrigues1988]

Great Vid! Understtod the concepts well!

[@subhankarsahoo1316]

we can optimize it by iterating the string from end ,then no reversal of ans required

[@sudiptasaha2592]

Great Explanation bhaiya...

[@AmitRaj-wk3tw]

Great Video & nyc explanation

[@neilbohr6015]

just one question will this method works on "accca" o/p should be null string but it is giving "aca" acc to logic

[@abhishekbisht4126]

Awesome Content ! Understood it in the first go.

[@HelloWorldbyprince]

Thanks for the support ☺️

[@Radhikesh]

great vid !
nyc explanation, Understood well

[@HelloWorldbyprince]

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[@himanshugupta160]

Thank u bhaiya

[@arvind_kumar_it105]

Loves your explanation from Hashing series 💜

[@HelloWorldbyprince]

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Thanks for the support

[@saurabhtiwari9653]

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best explanation

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[@Niteshkumar-gw7cw]

Amaging explanation 👌🙏

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[@arnoldsmith6584]

seen this question in deshaw interview so important question

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[@ankitmanhotra1861]

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Feeling like "sahi teacher pakada gya hai "
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[@pravinmhaske1001]

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[@pinkujain7577]

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[@mattiullah318]

Very helpful video

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[@ishankrajpal8231]

stackst;
what is st??

[@HelloWorldbyprince]

its the name of stack which we built or created
aap aur v kuch naam de sakte ho

[@ranidhole1449]

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[@pritishpattnaik4674]

Done in 1st attempt , easy
string removeDuplicates(string s) {
stack st;
for (int i=0 ; i

[@HelloWorldbyprince]

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[@naman6086]

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❤

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[@Ramneet04]

Bhaiya plz el bar remove all occurance in the string explain krdo.. Plz i not getting the concept of substring

[@ramehhooyex9886]

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[@HelloWorldbyprince]

Attendance marked ✅

[@raaajj_aryan]

Sir, I'm unable to successfully submit this code. All the test cases pass but while submitting this one a "TIME LIMIT EXCEEDED" warning pops up. Can you help me with this?

[@YuvrajSingh-rr5lh]

add i++ in the end of while loop

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[@vitaminprotein2217]

leetcode 1047 cpp sol two approaches iterative and stacks :
class Solution {
public:
string removeDuplicates(string s) {
//1st approach->iterative
int i=0;
while(iindex,2 (1st element the index itself and 2nd its adjacent/next one)
s.erase(i,2);
if(i>0) i--;
}
else
i++;
}
return s;

//2nd approach(more optimised)->using stacks
//using stacks
stackst;
string ans="";//return type is string not string vector
//as LIFO so traverse from back so we wont be needed any reverse function later
for(int i=s.size()-1;i>=0;i--){
//condition check
//"while" loop dont make any sense as only one element would be inserted at a time so will be removed once if condition satisfies
if(!st.empty() && st.top()==s[i]){
st.pop();
continue;//skips the loop for that i
}
st.push(s[i]);
}
//traverse the stack and push elements into the array
while(!st.empty()){
ans.push_back(st.top());
st.pop();
}
return ans;
}
};

[@HelloWorldbyprince]

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[@ajit6465]

Bhaiya / sir memory limit exceed show ho rha h same code

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dekh rahe hai

[@HelloWorldbyprince]

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[@sdmovies5430]

Ans+= ele means ?? Bhaiya plz bol do baki samaj aa gaya

[@ishankrajpal8231]

time limit exceeded dikha rha he

[@prakharagarwal8035]

Solution is not working for "bbaab"
Please correct your solution

[@waleednoon3771]

weel explain

[@HelloWorldbyprince]

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attendance

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[@cr7johnChan]

Trees done,graph done ,hashing done ,matrix done ,stack loading ,kisne bola hai koi nahi dekh raha

[@SexyTalks9720]

Don't accept this code on gfg

[@HelloWorldbyprince]

Check the language on gfg what u selected ?
Or make a line by line check my code with yours

[@shivamehta6537]

Great👍

[@HelloWorldbyprince]

Thanks for the support

[@ANKITSINGH-xv2et]

great

[@HelloWorldbyprince]

Thanks Ankit