Count Number of Teams | Simple thought process | Intuition | Leetcode 1395
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This is the 99th Video of our Playlist "Array 1D/2D : Popular Interview Problems" by codestorywithMIK
In this video we will try to solve a very good Array Problem : Count Number of Teams | Simple thought process | Intuition | Leetcode 1395
I will explain the intuition so easily that you will never forget and start seeing this as cakewalk EASYYY.
We will do live coding after explanation and see if we are able to pass all the test cases.
Also, please note that my Github solution link below contains both C++ as well as JAVA code.
Problem Name : Count Number of Teams | Simple thought process | Intuition | Leetcode 1395
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Summary :
The provided solution calculates the number of valid teams that can be formed from the given rating array. A valid team consists of three soldiers, with their ratings either strictly increasing or strictly decreasing. The approach can be summarized as follows:
Initialization:
Initialize a variable teams to 0 to keep track of the number of valid teams.
Get the size of the rating array.
Iterate Through the Middle Soldier:
Use an outer loop to iterate through each element j in the rating array, excluding the first and last elements. This element serves as the middle soldier in the potential teams.
Count Elements on the Left and Right:
For each j, use two inner loops:
The first inner loop counts the number of elements on the left of j that are either smaller (countSmallerLeft) or larger (countLargerLeft) than rating[j].
The second inner loop counts the number of elements on the right of j that are either larger (countLargerRight) or smaller (countSmallerRight) than rating[j].
Calculate the Number of Valid Teams:
Calculate the number of valid teams by considering:
Teams that form a strictly increasing sequence: countSmallerLeft * countLargerRight.
Teams that form a strictly decreasing sequence: countLargerLeft * countSmallerRight.
Add these counts to the teams variable.
Return the Result:
Return the total number of valid teams stored in the teams variable.
✨ Timelines✨
00:00 - Introduction
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