Python While 循环示例

#Tasks
# 2 4   6   8   10
#3  6   9   12  15
#1  3   5   7   9   2   4   6   8   10
#10 8   6   4   2
#9  7   5   3   1
#1  2   3   4   5   6   7   8   9   10
#1  RED BLUE RED 5 REDBLUE 7 RED BLUE RED


#Task 1
i=1
while i <= 10:
    if i%2 ==0:
        print(i, end =' ')
    i=i+1
print('')


#Task 2

i=1
while i <= 15:
    if i%3 ==0:
        print(i, end =' ')
    i=i+1
print('')

#Task 3 using 2 loops

i=1
while i<= 10:
    if i%2 != 0:
        print(i, end= ' ')
    i=i+1
i=1
while i<=10:
    if i%2 == 0:
        print(i, end =' ')
    i=i+1
print('')

#Task 3 using 1 loop

i=1
output = ''
while i<= 10:
    if i%2 != 0:
        print(i, end= ' ')
    elif i%2 == 0:
        output = output + str(i) + ' '
    i=i+1
else:
    print(output)

#Task 4

i=10
while i>=1:
    if i%2 == 0:
        print(i, end =' ')
    i=i-1
print('')

#Task 5

i=10
while i>=1:
    if i%2 != 0:
        print(i, end =' ')
    i=i-1
print('')

#Task 6 

i = 1
while i<=10:
    print(i, end =' ')
    i=i+1
print('')

#Task 7

i = 1
while i<=10:
    if i%2 == 0 and i%3 == 0:
        print('REDBLUE',end =' ')
    elif i%3 == 0:
        print('BLUE',end= ' ')
    elif i%2 == 0:
        print('RED',end =' ')
    else:
        print(i,end =' ')
    i=i+1
print('')