Suppose we have a number n, we have to return this number into string format where thousands are separated by comma (",").
So, if the input is like n = 512462687, then the output will be "512,462,687"
To solve this, we will follow these steps −
res := n as string
res := reversed form of res
ans := a blank string
for i in range 0 to size of res - 1, do
if i mod 3 is same as 0 and i is not same as 0, then
ans := ans concatenate ','
ans := ans concatenate res[i]
ans := reversed form of ans
Let us see the following implementation to get better understanding −
def solve(n): res = str(n) res = res[::-1] ans = "" for i in range(len(res)): if i%3 == 0 and i != 0 : ans += ',' ans += res[i] ans = ans[::-1] return ans n = 512462687 print(solve(n))