MEDIAN OF SORTED ARRAYS

#1

WHY NOT IT IS PASSING ALL THE TEST CASES

#2
#3

Check for test case:
4
1 2 3 6
4 6 8 10
Expected output is: 5
Yours is giving is: 4

#4

https://ide.codingblocks.com/s/441556 arrays are merged but how to find median

#5

Here is the approach:

  1. Calculate the medians m1 and m2 of the input arrays ar1[] and ar2[] respectively.
  2. If m1 and m2 both are equal then we are done. return m1 (or m2) .
  3. If m1 is greater than m2, then median is present in one of the below two subarrays.
    a) From first element of ar1 to m1 (ar1[0…| n/2 |]) .
    b) From m2 to last element of ar2 (ar2[| n/2 |…n-1]) .
  4. If m2 is greater than m1, then median is present in one
    of the below two subarrays.
    a) From m1 to last element of ar1 (ar1[| n/2 |…n-1]) .
    b) From first element of ar2 to m2 (ar2[0…| n/2 |])
  5. Repeat the above process until size of both the subarrays becomes 2.
  6. If size of the two arrays is 2 then use below formula to get the median.
    Median = (max(ar1[0], ar2[0]) + min(ar1[1], ar2[1]))/2
#6

You can also refer to simple approach like this


If you find above one little complex.

#7

why can not we use this approach , fiest merge the two arrays and then find the median of the merged array

#8

We are using this only, but your array is not merged your c array is like this
1 4 2 6 3 8 6 10
Instead it should have been
1 2 3 4 6 6 8 10
Now find the median of this array
This is the approach you should apply.

#9

ok thank you so much

#10

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