Edit Distance, Error in video?

#1

At 28:56, line 22 is wrong,
If string is same then the answer is simply dp[i-1][j-1]
Video:CPP ★ Dynamic Programming | Edit Distance
Refer: https://discuss.codechef.com/t/wa-edit-distance-edist-spoj/26657/2?u=hetp111

When both the character is same
#2

what is the doubt in here?

#3

No doubt, in the video of edit distance there’s a mistake at At 28:56, line 22 is wrong,
If string is same then the answer is simply dp[i-1][j-1]

#4

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