finding the max values

9 次查看（过去 30 天）
hanan abu elhejaa
hanan abu elhejaa 2018-1-20
回答： Walter Roberson 2018-1-20
if i have an array and a number k how can I find the biggest k number in the array . but the number should be according there positing in the array : arr= [ 1 9 4 7 38 8] k= 4 the ans must be = [ 9 7 38 8]

请先登录，再回答此问题。

回答（3 个）

ANKUR KUMAR
ANKUR KUMAR 2018-1-20
编辑：ANKUR KUMAR 2018-1-20
arr= [ 1 9 4 7 38 8]
k= 4;
[arr1 b]=sort(arr,'descend');
b1=b(1:k)
arr(sort(b1,'ascend'))
Star Strider
Star Strider 2018-1-20
See if this does what you want:
k = 4;
arr = [ 1 9 4 7 38 8];
Result = arr(arr > k)
Result =
9 7 38 8
  1 个评论
Walter Roberson
Walter Roberson 2018-1-20
The question appears to want k to be the number of values to return.

请先登录，再进行评论。

Walter Roberson
Walter Roberson 2018-1-20
With R2017b or later use maxk https://www.mathworks.com/help/matlab/ref/maxk.html
To get the elements in vector order use the two output form and ignore the first output and index the original vector at sort() of the second output

类别

在 Help Center 和 File Exchange 中查找有关 Operators and Elementary Operations 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by