import numpy as np# input 2d arrayin_arr = np.array([[2,0,10],[5,4,3]])print("input array : ", in_arr)# output sorted array indices
out_arr1 = np.argsort(in_arr, kind='mergesort', axis=0)# 列print("Output sorted array indices along axis 0: ", out_arr1)
out_arr2 = np.argsort(in_arr, kind='heapsort', axis=1)# 行print("Output sorteded array indices along axis 1: ", out_arr2)
输出
input array :[[2010][543]]
Output sorted array indices along axis 0:[[001][110]]
Output sorteded array indices along axis 1:[[102][210]]
示例3
# get two largest value from numpy array
x=np.array([12,43,2,100,54,5,68])print(x)# using argsort get indices of value of arranged in ascending orderprint(np.argsort(x))#get two highest value index of arrayprint(np.argsort(x)[-2:])# to arrange in ascending order of indexprint(np.argsort(x)[-2:][::-1])# to get highest 2 values from array
x[np.argsort(x)[-2:][::-1]]
03 yy and shop 题目解法C 题目 解法
C
#include<bits/stdc.h>
using namespace std;
const int M 1000;
int C[800],V[800],K[800];
int F[801][3001], G[801][3001];int main(){int N;scanf("%d",&N);for(int i1; i<N; i) scanf("%d%d%d&quo…
这里写自定义目录标题 Python中的math和numpy源程序修改后错误原因 Python中的math和numpy
错误描述:TypeError: only size-1 arrays can be converted to Python scalars
源程序 修改后 错误原因
numpy包中也含有sin(),pi需要使用numpy包中函数; 这个…
问题:在用python3使用knn.train(trainData, responses)的时候,可能会产生错误:TypeError: only size-1 arrays can be converted to Python scalars
newcomer np.random.randint(0, 100, (1, 2)).astype(np.float32)
plt.scatter(newcomer[…
sizeof的定义:
sizeof是C/C中的一个操作符(operator),简单的说其作用就是返回一个对象或者类型所占的内存字节数。
MSDN上的解释为:
The sizeof keyword gives the amount of storage, in bytes, associated with a…