Q
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99.
Find the largest palindrome made from the product of two 3-digit numbers.
R
First Version
for(i in 100:999)
{
for(j in 100:999)
{
temp <- i*j
if(temp > 100000)
{
if((temp %/% 100000)==(temp %% 10) & (temp %/% 10000) %% 10 == ((temp %/% 10) %% 10) & (temp %/% 1000) %% 10 ==(temp %/% 100) %% 10)
result <-temp
}
else
{
if((temp %/% 10000)==(temp %% 10) & (temp %/% 1000) %% 10 == ((temp %/% 10) %% 10))
result <-temp
}
}
}
print(result)