#encoding=utf-8
"""
用嵌套列表的方式,遍历输出一个矩阵
"""
#方法一
def traversMatrix(matrix):
for i in matrix:
for j in i:
print(j,end=" ")
print()
matrix=[[1,2,3],[4,5,6],[7,8,9]]
print(traversMatrix(matrix))
#方法二
def traversMatrix1(matrix1):
for i in range(len(matrix1)):
for j in range(len(matrix1[i])):
print(matrix1[i][j],end=" ")
print()
matrix1=[[10,11,12],[13,14,15],[16,17,18]]
print(traversMatrix1(matrix1))
"""
嵌套列表的正、反对角线之和正对角线之和
"""
#正对角线之和
matrix=[
[1,2,3],
[4,5,6],
[7,8,9]]
def normalDiagonalLine(matrix):
normalIncidenceSum=0
for i in range(len(matrix)):
for j in range(len(matrix[i])):
if i==j:
normalIncidenceSum+=matrix[i][j]
return normalIncidenceSum
print(normalDiagonalLine(matrix))
#反对角线之和
def backDiagonal(matrix):
backDiagonalSum=0
for i in range(len(matrix)):
for j in range(len(matrix[i])):
if i+j==len(matrix[i])-1:
backDiagonalSum+=matrix[i][j]
return backDiagonalSum
print(backDiagonal(matrix))
2019-04-29:对称矩阵:遍历输出矩阵,求矩阵的正对角和,反对角和
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转载自blog.csdn.net/sinat_18722099/article/details/89683048
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