syntax_data: {"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // transposition
context_before:             if (i > 1) && (j > 1) && (a[a_idx] == b[b_idx - 1]) && (a[a_idx - 1] == b[b_idx]) {
context_after:                 current[j] = cmp::min(current[j], prev_prev[j - 2] + 1);