给定向量a = [1,2，3.2，4，5]和元素x = 3在向量a中，如何找到大于x的确切项? [英] Given a vector a=[1,2, 3.2, 4, 5] and an element x=3 In vector a, how to find the exact entry which is bigger than x?

问题描述

给定向量a = [1,2，3.2，4，5]和元素x = 3 在向量a中，如何找到大于x的确切项?

Given a vector a=[1,2, 3.2, 4, 5] and an element x=3 In vector a, how to find the exact entry which is bigger than x?

推荐答案

我不确定精确"条目的含义.这将为您提供 all 值大于x:

I'm not sure what you mean by "exact" entry. This will give you indices of all the values greater than x:

indices = find(a > x);

假设a已经排序，这将为您提供第一个索引(即，小于x的最小值):

Assuming a is already sorted, this will give you the index of the first one (i.e. the smallest value greater than x):

index = find(a > x,1);

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