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- 1. Input, print and numbers
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- 3. Conditions: if, then, else
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Swap the columns
Statement
Given two positive integers \( m \) and \( n \), \( m \) lines of \( n \) elements, giving an \( m \times n \) matrix \( A \), followed by two non-negative integers \( i \) and \( j \) less than \( n \), swap columns \( i \) and \( j \) of \( A \) and print the result. Write a function swap_columns(a, i, j)
and call it to exchange the columns.
In all the problems input the data using input()
and print the result using print()
.
Statement
Given two positive integers \( m \) and \( n \), \( m \) lines of \( n \) elements, giving an \( m \times n \) matrix \( A \), followed by two non-negative integers \( i \) and \( j \) less than \( n \), swap columns \( i \) and \( j \) of \( A \) and print the result.Write a function swap_columns(a, i, j)
and call it to exchange the columns.
In all the problems input the data using input()
and print the result using print()
.