首先分析首行规律,首行每个数字和前一个数字的差值每次都增加1 即增量每迭代1次就加1
分析行之间差距 每一行取上一行第一位数字之外的元素,并对每个元素减去1即可
def get_first_line(count):
arr, increase = [1], 2
for i in range(1, count):
arr.append(arr[i - 1] + increase)
increase += 1
return arr
def get_all_lines(arr):
result = []
# result.append(arr)
count = len(arr)
for i in range(count):
result.append(arr)
arr = [value - 1 for value in arr[1:]]
return result
while True:
try:
arr1 = get_first_line(int(input()))
res = get_all_lines(arr1)
for x in res:
for num in x:
print(num, end=' ')
print()
except EOFError: break