js
/**
* @param {number[]} nums
* @param {number} k
* @return {boolean}
*/
var checkSubarraySum = function(nums, k) {
let sum = 0
const remainderMap = new Map()
remainderMap.set(0, -1)
for(let i = 0; i < nums.length; i++) {
sum += nums[i]
let remainder = sum % k
remainder = remainder < 0 ? remainder + k : remainder
if (remainderMap.has(remainder)) {
if (i – remainderMap.get(remainder) > 1) return true
} else {
remainderMap.set(remainder, i)
}
}
return false
};
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