How to print out square numbers like this?-CodePudding

i need output like this:

this is what i can do but it's not right

size=int(input())
for row in range(1,size 1):
    for col in range(1,size 1):
        print(row,end=' ')
    print(col)

only use forloop

CodePudding user response：

Single loop:

size=int(input())

for i in range(1, size   1):    
    print(' '.join([str(max([i, j])) for j in range(1, size   1)]))

CodePudding user response：

Here is an easy to understand example :

num = int(input("Input a number : "))

for i in range(1, num 1):
    row = ""
    for j in range(1, num 1):
        row  = " "   str(j if j > i else i)
    print(row)

CodePudding user response：

You can do:

size = int(input())
for i in range(1, size 1):
    print(' '.join(str(max(i, j)) for j in range(1, size 1)))

Example for size of 9:

1 2 3 4 5 6 7 8 9
2 2 3 4 5 6 7 8 9
3 3 3 4 5 6 7 8 9
4 4 4 4 5 6 7 8 9
5 5 5 5 5 6 7 8 9
6 6 6 6 6 6 7 8 9
7 7 7 7 7 7 7 8 9
8 8 8 8 8 8 8 8 9
9 9 9 9 9 9 9 9 9

It however doesn't print nicely for double digits:

1 2 3 4 5 6 7 8 9 10
2 2 3 4 5 6 7 8 9 10
3 3 3 4 5 6 7 8 9 10
4 4 4 4 5 6 7 8 9 10
5 5 5 5 5 6 7 8 9 10
6 6 6 6 6 6 7 8 9 10
7 7 7 7 7 7 7 8 9 10
8 8 8 8 8 8 8 8 9 10
9 9 9 9 9 9 9 9 9 10
10 10 10 10 10 10 10 10 10 10

So you can find the number of digits, and pad the strings:

import math

max_n = 10
digits = int(math.log10(max_n)) 1
for i in range(1, max_n 1):
    print(' '.join(str(max(i, j)).rjust(digits) for j in range(1, max_n 1)))


 1  2  3  4  5  6  7  8  9 10
 2  2  3  4  5  6  7  8  9 10
 3  3  3  4  5  6  7  8  9 10
 4  4  4  4  5  6  7  8  9 10
 5  5  5  5  5  6  7  8  9 10
 6  6  6  6  6  6  7  8  9 10
 7  7  7  7  7  7  7  8  9 10
 8  8  8  8  8  8  8  8  9 10
 9  9  9  9  9  9  9  9  9 10
10 10 10 10 10 10 10 10 10 10

CodePudding user response：

I make a list for each row. If the row number is i then the row starts with i i's. After that it counts up to the given size.

size = int(input())

for row in range(1, size   1):
    lst = [row] * row   list(range(row   1, size   1))
    print(' '.join([str(i) for i in lst]))

Output for size = 5:

CodePudding user response：

A solution following your code's logic:

for row in range(1,size 1):
    cnt = 1
    for col in range(1,size 1):
       if(cnt < row):
           printNum = row
    else:
        printNum = cnt
    cnt = cnt   1
    if(printNum > 9):
        print(printNum,end=' ')
    else:
        print(printNum,end='  ')
    print("\n")

CodePudding user response：

Yet another variation:

size = input()
width = len(size)
size = int(size) 1
for i in range(1, size):
    print(*(f'{max(i, j):>{width}}' for j in range(1, size)))

CodePudding user response：

This does it:

size=int(input())

for col in range(1,size 1):
    for row in range(1,size 1):
        if row <= col:
            print(col, end=' ')
        else:
            print(row, end=' ')
    print()

It's not the most elegant answer but it works for any size.

CodePudding user response：

Walrus to rescue. For Python 3.8

(size := int(input("Input a number : "))   1)
for i in range(1, size):
    print(' '.join(str(max(i, j)) for j in range(1, size)))

Result:

Enter a number : 5
1 2 3 4 5
2 2 3 4 5
3 3 3 4 5
4 4 4 4 5
5 5 5 5 5

CodePudding user response：

I just did this for fun... it's a recursive lambda that outputs correctly and includes a list comprehension for loop.

square_numbers = lambda val: '1 ' if val == 1 else '\n'.join([i   str(val) ' ' for i in square_numbers(val-1).split('\n')]   [(str(val) ' ') * val])

test

print('\n\n'.join([square_numbers(val) for val in range(1,int(input()))]))

output

...
1 2 3 4 5 6
2 2 3 4 5 6
3 3 3 4 5 6
4 4 4 4 5 6
5 5 5 5 5 6
6 6 6 6 6 6
...

CodePudding user response：

    # write a program to traverse every element of the two-dimensional array in Python.  
dt = [ [1, 2, 3, 4, 5], [2, 2, 3, 4, 5], [3, 3, 3, 4, 5 ], [4, 4, 4, 4, 5], [5, 5, 5, 5, 5] ]  
# Use for loop to print the entire elements of the two dimensional array.  
for x in dt:  # outer loop  
    for i in x:  # inner loop  
        print(i, end = " ") # print the elements  
    print()

This code will give you output like this:

but you have to input the array manually