HackerRank Min and Max problem solution in Python

HackerRank Min and Max problem solution in Python – In this Min and Max problem, You are given a 2-D array with dimensions N X M. Your task is to perform the min function over axis 1 and then find the max of that.

min

The tool min returns the minimum value along a given axis.

import numpy

my_array = numpy.array([[2, 5], 
                        [3, 7],
                        [1, 3],
                        [4, 0]])

print numpy.min(my_array, axis = 0)         #Output : [1 0]
print numpy.min(my_array, axis = 1)         #Output : [2 3 1 0]
print numpy.min(my_array, axis = None)      #Output : 0
print numpy.min(my_array)                   #Output : 0

By default, the axis value is None. Therefore, it finds the minimum over all the dimensions of the input array.

max

The tool max returns the maximum value along a given axis.

import numpy

my_array = numpy.array([[2, 5], 
                        [3, 7],
                        [1, 3],
                        [4, 0]])

print numpy.max(my_array, axis = 0)         #Output : [4 7]
print numpy.max(my_array, axis = 1)         #Output : [5 7 3 4]
print numpy.max(my_array, axis = None)      #Output : 7
print numpy.max(my_array)                   #Output : 7

By default, the axis value is None. Therefore, it finds the maximum over all the dimensions of the input array.

HackerRank Min and Max problem solution in Python 2.

import numpy
l=map(int,raw_input().split())
m=[]
for i in range(l[0]):
    m.append(map(int,raw_input().split()))
m=numpy.array(m)
print max(numpy.min(m,axis=1))    

Min and Max solution in Python 3.

import numpy

n,m=map(int,input().split())

lista=[list(map(int,input().split())) for i in range(n)]

ar=numpy.array(lista)

print(max(numpy.min(ar,axis=1)))

Problem solution in pypy programming.

# Enter your code here. Read input from STDIN. Print output to STDOUT
import numpy
N, M = map(int, raw_input().split())
myarr = []
for _ in range(N): 
    myarr.append(map(int,raw_input().split()))
print numpy.max(numpy.min(myarr, axis = 1), axis = 0)

Problem solution in pypy3 programming.

# Enter your code here. Read input from STDIN. Print output to STDOUT
N, M= [int (i) for i in input().split()]
arr=[]
for i in range(N):
    arr.append( [int(x) for x in input().split()]  )
ma=arr[0][0]
for i in range(N):
    mi=arr[i][0]
    for j in range(1,M):
        if (arr[i][j]<mi):
            mi=arr[i][j]
    if (mi>ma):
        ma=mi
print(ma)