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# Program to find length of longest anagram subsequence in Python

Suppose we have two lowercase strings S and T, we have to find the length of the longest anagram subsequence.

So, if the input is like S = "helloworld", T = "hellorld", then the output will be 8

To solve this, we will follow these steps −

c := a new map, d := a new map

for i in range 0 to size of a, do

if a[i] in c, then

c[a[i]] := c[a[i]] + 1

otherwise,

c[a[i]] := 1

for i in range 0 to size of b, do

if b[i] in d, then

d[b[i]] := d[b[i]] + 1

otherwise,

d[b[i]] := 1

res := 0

for each ch in c, do

if d[ch] > 0, then

res := res + minimum of c[ch] and d[ch]

return res

Let us see the following implementation to get better understanding −

## Example

class Solution: def solve(self, a, b): c, d = {}, {} for i in range(len(a)): if a[i] in c: c[a[i]] += 1 else: c[a[i]] = 1 for i in range(len(b)): if b[i] in d: d[b[i]] += 1 else: d[b[i]] = 1 res = 0 for ch in c: if d.get(ch, 0) > 0: res += min(c[ch], d[ch]) return res ob = Solution() S = "helloworld" T = "hellorld" print(ob.solve(S, T))

## Input

S = "helloworld", T = "hellorld"

## Output

1

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