Longest Palindromic Sub-sequence #235
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prateekiiest
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Dec 24, 2017
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| ### Filling of the matrix | ||
| Every single charecter contributes to a palindromic string of length 1 starting and ending at itself, therefore we fill the diagonal of the | ||
| matrix with 1 for every [i][i] entry. <br/><br/> |
| For every other entry:<br/> | ||
| If last and first characters of str are same, then mat[i][j] = mat[i+1][j-1] + 2, as it considers [2(for the first and the last chaar)] + | ||
| [longest palindromic subsequence between these 2 chars].<br/> | ||
| Else mat[i][j] = max(mat[i][j-1], mat[i+1][j]). |
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similarly add ` before and after
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ISSUE NUMBER
117
SHORT DESCRIPTION
Added the code for longest palindromic subsequence along with a readme.md for it.