Python/matrix/searching_in_sorted_matrix.py

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def search_in_a_sorted_matrix(mat, m, n, key):
i, j = m - 1, 0
while i >= 0 and j < n:
if key == mat[i][j]:
print("Key {} found at row- {} column- {}".format(key, i + 1, j + 1))
return
if key < mat[i][j]:
i -= 1
else:
j += 1
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print("Key %s not found" % (key))
def main():
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mat = [[2, 5, 7], [4, 8, 13], [9, 11, 15], [12, 17, 20]]
x = int(input("Enter the element to be searched:"))
print(mat)
search_in_a_sorted_matrix(mat, len(mat), len(mat[0]), x)
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if __name__ == "__main__":
main()