Finally got accept 884ms!!! javascript solution TLE

• /**

var TwoSum = function() {

``````this.db = {};
``````

};

/**

• Add the number to an internal data structure.
• @param {number} input
• @returns {void}
*/
//O(1)

``````if (this.db[input] === undefined) {
this.db[input] = 1;
} else {
this.db[input] += 1;
}
``````

};

/**

• Find if there exists any pair of numbers which sum is equal to the value.
• @param {number} val
• @returns {boolean}
*/
//O(n)

TwoSum.prototype.find = function(val) {

``````for (var num1 in this.db) {
var num2 = val - num1;
if (this.db[num2] !== undefined) {
if (num1 !== num2 || this.db[num2] > 2) {
return true;
}
}
}
return false;
``````

};

• /**

• initialize your data structure here

• @constructor
*/
var TwoSum = function() {

this.myMap = new Map();
};

/**

• Add the number to an internal data structure.

• @param {number} input

• @returns {void}
*/
//O(1)

if (this.myMap.has(input)) {
this.myMap.set(input, this.myMap.get(input)+1)
} else {
this.myMap.set(input, 1);
}
};

/**

• Find if there exists any pair of numbers which sum is equal to the value.

• @param {number} val

• @returns {boolean}
*/
//O(n)
TwoSum.prototype.find = function(val) {

for (var num1 of this.myMap.keys()) {
var num2 = val - num1;
if (this.myMap.has(num2)) {
if (num1 !== num2 || this.myMap.get(num1) >= 2) {
return true;
}
}
}
return false;
};

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