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24 changes: 24 additions & 0 deletions leetcode2/2medium/최은서/Q915.js
Original file line number Diff line number Diff line change
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/**
* @param {number[]} nums
* @return {number}
*/
//left의 모든 원소는 right의 모든 원소보다 작거나 같아야 한다
var partitionDisjoint = function (nums) {
const n = nums.length;
const rightMin = Array(n).fill(0);
rightMin[n - 1] = nums[n - 1];
for (let i = n - 2; i >= 0; i--) {
rightMin[i] = Math.min(rightMin[i + 1], nums[i]);
}
let leftMax = nums[0];
let idx = 0;
for (idx; idx < n - 1; idx++) {
leftMax = Math.max(leftMax, nums[idx]);
//left의 모든 요소가 right보다 작아야 함
//left에서 가장 큰 값 <= right에서 가장 작은 값
if (leftMax <= rightMin[idx + 1]) {
break;
}
}
return idx + 1;
};