R编程中向量的排序——sort()函数

R 语言中的sort()函数用于按向量的值对向量进行排序。它以布尔值作为参数以升序或降序排序。

Syntax:
sort(x, decreasing, na.last)

Parameters:
x: Vector to be sorted
decreasing: Boolean value to sort in descending order
na.last: Boolean value to put NA at the end

示例 1：

# R program to sort a vector
  
# Creating a vector
x <- c(7, 4, 3, 9, 1.2, -4, -5, -8, 6, NA)
  
# Calling sort() function
sort(x)

输出：

[1] -8.0 -5.0 -4.0  1.2  3.0  4.0  6.0  7.0  9.0

示例 2：

# R program to sort a vector
  
# Creating a vector
x <- c(7, 4, 3, 9, 1.2, -4, -5, -8, 6, NA)
  
# Calling sort() function
# to print in decreasing order
sort(x, decreasing = TRUE)
  
# Calling sort() function
# to print NA at the end
sort(x, na.last = TRUE)

输出：

[1]  9.0  7.0  6.0  4.0  3.0  1.2 -4.0 -5.0 -8.0
[1] -8.0 -5.0 -4.0  1.2  3.0  4.0  6.0  7.0  9.0   NA