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algorithm-js
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mridiLiveTest.js
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mridiLiveTest.js
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/*
interval[i] = [starti, endi] 인 간격의 배열이 주어지면
겹치는 모든 간격을 병합하고 입력의 모든 간격을 포함하는 겹치지 않는 간격의 배열을 반환합니다.
input : [[1,3],[2,6],[8,10],[15,18]]
output: [[1,6],[8,10],[15,18]]
input: [[1,3], [2,6], [4,10], [15,18]]
output: []
input : [[1,4],[4,5]]
output: [[1,5]]
input : [[2, 4], [1, 3]]
output : [[1, 4]]
*/
/**
* @param {number[][]} intervals
* @return {number[][]}
*/
// 순서가 꼭 다음이 큰게 올거라는 보장이 없는데 왜 그렇게 생각했을까? -> 작은순서대로 먼저 정렬해줘야 한다.
// 겹치는 구간이 있으면, 두개의 좌표를 비교해서 가장 작은값과 가장 큰 값으로 좌표를 넣어주면 된다.
const merge = function (intervals) {
const sortedIntervals = intervals.sort((a, b) => {
if (a[0] > b[0]) return 1;
if (a[0] < b[0]) return -1;
if (a[0] === b[0]) return 0;
});
const answer = [[...sortedIntervals[0]]];
for (let i = 1; i < sortedIntervals.length; i++) {
if (answer[answer.length - 1][1] >= sortedIntervals[i][0]) {
const tempArr = [...answer[answer.length - 1], ...sortedIntervals[i]];
const minValue = Math.min(...tempArr);
const maxValue = Math.max(...tempArr);
answer.pop();
answer.push([minValue, maxValue]);
continue;
}
answer.push(sortedIntervals[i]);
}
return answer;
};
console.log(
merge([
[1, 4],
[4, 5],
])
);
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