nums
순회function minOperations(nums: number[]): number {
let operations = 0
for(let i = 1; i < nums.length; i++) {
const prev = nums[i - 1]
const cur = nums[i]
if(cur > prev) continue
const gap = prev + 1 - cur
operations += gap
nums[i] = prev + 1
}
return operations
};