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we can iterate just once!

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David 2024-12-04 22:48:53 -05:00
parent 9e99375349
commit e7e1b615ff
1 changed files with 4 additions and 8 deletions
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12
04/index.ts
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@ -17,16 +17,12 @@ console.log(
.reduce( .reduce(
(coll, curr, index, array) => { (coll, curr, index, array) => {
// 2D string matching is a pain. Let's turn it into a 1D problem! // 2D string matching is a pain. Let's turn it into a 1D problem!
curr.split("").forEach((s, i) => {
// create the columns // create the columns
curr.split("").forEach((s, i) => {
coll[i] += s; coll[i] += s;
}); // create the left-diagonals
// create the down-left-diagonals coll[array.length + index + i] += s;
curr.split("").forEach((s, i) => { // create the right-diagonals
coll[i + array.length + index] += s;
});
// create the down-right-diagonals
curr.split("").forEach((s, i) => {
coll[array.length * 4 + index - i - 2] += s; coll[array.length * 4 + index - i - 2] += s;
}); });
// include the original row // include the original row