Search in a matrix
Easy Accuracy: 50.13% Submissions: 23963 Points: 2

Given a matrix mat[][] of size N x M, where every row and column is sorted in increasing order, and a number X is given. The task is to find whether element X is present in the matrix or not.


Example 1:

Input:
N = 3, M = 3
mat[][] = 3 30 38 
         44 52 54 
         57 60 69
X = 62
Output:
0
Explanation:
62 is not present in the
matrix, so output is 0


Example 2:

Input:
N = 1, M = 6
mat[][] = 18 21 27 38 55 67
X = 55
Output:
1
Explanation:
55 is present in the
matrix at 5th cell.


Your Task:
You don't need to read input or print anything. You just have to complete the function matSearch() which takes a 2D matrix mat[][], its dimensions N and M and integer X as inputs and returns 1 if the element X is present in the matrix and 0 otherwise.


Expected Time Complexity: O(N+M).
Expected Auxiliary Space: O(1).


Constraints:
1 <= N, M <= 1005
1 <= mat[][] <= 10000000
1<= X <= 10000000

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Search in a matrix

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