Numpy 11-15

Author: harshildarji

Numpy/Dot and Cross.py

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+# Dot and Cross
+# https://www.hackerrank.com/challenges/np-dot-and-cross/problem
+
+import numpy
+n = int(input().strip())
+a, b = (numpy.array([input().split() for _ in range(n)], int) for _ in range(2))
+print(numpy.dot(a, b))

Numpy/Inner and Outer.py

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+# Inner and Outer
+# https://www.hackerrank.com/challenges/np-inner-and-outer/problem
+
+import numpy
+a, b = (numpy.array(input().split(), int) for _ in range(2))
+print(numpy.inner(a, b), numpy.outer(a, b), sep = '\n')

Numpy/Linear Algebra.py

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+# Linear Algebra
+# https://www.hackerrank.com/challenges/np-linear-algebra/problem
+
+import numpy
+n = int(input().strip())
+a = numpy.array([input().split()[:n] for _ in range(n)], float)
+print(numpy.linalg.det(a))

Numpy/Mean, Var, and Std.py

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+# Mean, Var, and Std
+# https://www.hackerrank.com/challenges/np-mean-var-and-std/problem
+
+import numpy
+n, m = map(int, input().split())
+a = numpy.array([input().split()[:m] for _ in range(n)], int)
+print(numpy.mean(a, axis = 1), numpy.var(a, axis = 0), numpy.std(a), sep = '\n')

Numpy/Polynomials.py

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+# Polynomials
+# https://www.hackerrank.com/challenges/np-polynomials/problem
+
+import numpy
+print(numpy.polyval(numpy.array(input().split(), float), int(input().strip())))