随机select数字及其来自matlab中数组的索引
Randomly select number and its index from an array in matlab
我有一个数组 c=[1 2 3 4 5];可能有重复的数字。
我想从数组中随机选择一个元素及其索引。
谁能帮帮我..
你可以find
代码:
C = [1,2,3,4,5,4,4,5]; %// Example input. Change with your original array
no = C(randi(numel(C))) %// Your code to find a random number.
idx = find(C == no) %// find all the indices matching the value of the number.
输出:
no =
5
idx =
5 8
首先获取索引:
idx = randi(numel(c));
然后从数组中获取元素
val = c(idx);
我有一个数组 c=[1 2 3 4 5];可能有重复的数字。 我想从数组中随机选择一个元素及其索引。 谁能帮帮我..
你可以find
代码:
C = [1,2,3,4,5,4,4,5]; %// Example input. Change with your original array
no = C(randi(numel(C))) %// Your code to find a random number.
idx = find(C == no) %// find all the indices matching the value of the number.
输出:
no =
5
idx =
5 8
首先获取索引:
idx = randi(numel(c));
然后从数组中获取元素
val = c(idx);