You are given two strings stamp and target. Initially, there is a string s of length target.length with all s[i] == '?'.
In one turn, you can place stamp over s and replace every letter in the s with the corresponding letter from stamp.
stamp = "abc" and target = "abcba", then s is "?????" initially. In one turn you can:\n\n\tstamp at index 0 of s to obtain "abc??",stamp at index 1 of s to obtain "?abc?", orstamp at index 2 of s to obtain "??abc".stamp must be fully contained in the boundaries of s in order to stamp (i.e., you cannot place stamp at index 3 of s).We want to convert s to target using at most 10 * target.length turns.
Return an array of the index of the left-most letter being stamped at each turn. If we cannot obtain target from s within 10 * target.length turns, return an empty array.
\n
Example 1:
\n\n\nInput: stamp = "abc", target = "ababc"\nOutput: [0,2]\nExplanation: Initially s = "?????".\n- Place stamp at index 0 to get "abc??".\n- Place stamp at index 2 to get "ababc".\n[1,0,2] would also be accepted as an answer, as well as some other answers.\n\n\n
Example 2:
\n\n\nInput: stamp = "abca", target = "aabcaca"\nOutput: [3,0,1]\nExplanation: Initially s = "???????".\n- Place stamp at index 3 to get "???abca".\n- Place stamp at index 0 to get "abcabca".\n- Place stamp at index 1 to get "aabcaca".\n\n\n
\n
Constraints:
\n\n1 <= stamp.length <= target.length <= 1000stamp and target consist of lowercase English letters.Compiled with clang 11 using the latest C++ 17 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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