src/main/java/org/apache/commons/text/similarity/LevenshteinDetailedDistance.java [246:267]:
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        boolean swapped = false;
        if (n > m) {
            // swap the two strings to consume less memory
            final SimilarityInput<E> tmp = left;
            left = right;
            right = tmp;
            n = m;
            m = right.length();
            swapped = true;
        }

        int[] p = new int[n + 1]; // 'previous' cost array, horizontally
        int[] d = new int[n + 1]; // cost array, horizontally
        int[] tempD; // placeholder to assist in swapping p and d
        final int[][] matrix = new int[m + 1][n + 1];

        //filling the first row and first column values in the matrix
        for (int index = 0; index <= n; index++) {
            matrix[0][index] = index;
        }
        for (int index = 0; index <= m; index++) {
            matrix[index][0] = index;
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src/main/java/org/apache/commons/text/similarity/LevenshteinDetailedDistance.java [389:410]:
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        boolean swapped = false;
        if (n > m) {
            // swap the input strings to consume less memory
            final SimilarityInput<E> tmp = left;
            left = right;
            right = tmp;
            n = m;
            m = right.length();
            swapped = true;
        }

        int[] p = new int[n + 1]; // 'previous' cost array, horizontally
        int[] d = new int[n + 1]; // cost array, horizontally
        int[] tempD; //placeholder to assist in swapping p and d
        final int[][] matrix = new int[m + 1][n + 1];

        // filling the first row and first column values in the matrix
        for (int index = 0; index <= n; index++) {
            matrix[0][index] = index;
        }
        for (int index = 0; index <= m; index++) {
            matrix[index][0] = index;
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