Find Numbers With Even Number Of Digits | Multiple Ways | Leetcode 1295 | codestorywithMIK
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Hi Everyone, this is the 83rd video of our Playlist "Leetcode Easy".
Now we will be solving an Easy problem on Array - Find Numbers With Even Number Of Digits | Multiple Ways | Leetcode 1295 | codestorywithMIK
We will solve it using multiple ways. Counting digits can be done in many ways and we will discuss them in this video.
Problem Name : Find Numbers With Even Number Of Digits | Multiple Ways | Leetcode 1295 | codestorywithMIK
Company Tags : will update later
Code Github(C++ & JAVA) - https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Arrays/Leetcode Easy/Find Numbers With Even Number Of Digits.cpp
Leetcode Link : https://leetcode.com/problems/find-numbers-with-even-number-of-digits/description
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Video Summary :
Approach-1 (Using simple loop and counting digits):
Counts digits of each number by repeatedly dividing by 10 and checks if the count is even.
Approach-2 (Converting to string):
Converts each number to a string and checks if the string length (number of digits) is even.
Approach-3 (Using floor):
Uses the mathematical formula floor(log10(num)) + 1 to determine digit count and checks for evenness.
Approach-4 (Using ceil):
Applies ceil(log10(num + 1)) to approximate digit count and checks if it’s even.
Approach-5 (Using constraints):
Uses known numeric ranges with even digits to directly check if a number belongs to one of those ranges.
✨ Timelines✨
00:00 - Introduction
0:23 - Motivation
0:49: - Problem Explanation
1:50 - Approach-1
3:37 - Approach-2
4:46 - Approach-3
6:03 - Approach-4
6:41 - Approach-1
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