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// isPositiveDominant([1, 1, 1, 1, -3, -4])// false | |
// // There is only 1 unique positive value (1). | |
// // There are 2 unique negative values (-3, -4). | |
// isPositiveDominant([5, 99, 832, -3, -4])// true | |
// isPositiveDominant([5, 0])// true | |
isPositiveDominant([0, -4, -1])// false | |
function isPositiveDominant(arr) { |
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function sortByLength(arr = []) { | |
for (let j = 0; j < arr.length; j++) { | |
for (let i = 0; i < arr.length - j; i++) { | |
const [x, y] = [arr[i], arr[i + 1]] | |
if (arr[i + 1] && arr[i].length > arr[i + 1].length) swap(arr, i, i + 1) | |
} | |
} | |
console.log(arr) | |
return arr |
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function nQueenPlacement(board) { | |
let rowPositions = []; | |
let colPositions = []; | |
for (let i = 0; i < board.length; i++) { | |
for (let j = 0; j < board[i].length; j++) { | |
if (board[i][j] === 1) { | |
if (rowPositions.indexOf(i) === -1 && colPositions.indexOf(j) === -1 && pairModulusDiffers(rowPositions, colPositions, i, j)) { | |
rowPositions.push(i); | |
colPositions.push(j); |
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function decipherThis(string) { | |
const words = string.split(' '); | |
return words.map(word => decode(word.split(''))).join(' '); | |
} | |
function decode(wordArr) { | |
let hex = '' | |
let secChar | |
for (let [idx, char] of wordArr.entries()) { | |
if (Number(char) || char == 0) { |
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function fold(arr) { | |
let start = 0; | |
let end = arr.length - 1; | |
const res = [] | |
while (start < end) { | |
res.push(arr[start] + arr[end]); | |
start++; | |
end--; | |
} | |
if (arr.length % 2 === 1) res.push(arr[start]) |
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function onesInfection(matrix) { | |
const rowSet = new Set() | |
const colSet = new Set() | |
for (let i = 0; i < matrix.length; i++) { | |
for (let j = 0; j < matrix[i].length; j++) { | |
if (matrix[i][j] == 1) { | |
rowSet.add(i) | |
colSet.add(j) | |
} | |
} |
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const country_codes_array = ["AF","AL","DZ","AS","AD","AO","AI","AQ","AG","AR","AM","AW","AU","AT","AZ","BS","BH","BD","BB","BY","BE","BZ","BJ","BM","BT","BO","BQ","BA","BW","BV","BR","IO","BN","BG","BF","BI","KH","CM","CA","CV","KY","CF","TD","CL","CN","CX","CC","CO","KM","CG","CD","CK","CR","HR","CU","CW","CY","CZ","CI","DK","DJ","DM","DO","EC","EG","SV","GQ","ER","EE","ET","FK","FO","FJ","FI","FR","GF","PF","TF","GA","GM","GE","DE","GH","GI","GR","GL","GD","GP","GU","GT","GG","GN","GW","GY","HT","HM","VA","HN","HK","HU","IS","IN","ID","IR","IQ","IE","IM","IL","IT","JM","JP","JE","JO","KZ","KE","KI","KP","KR","KW","KG","LA","LV","LB","LS","LR","LY","LI","LT","LU","MO","MK","MG","MW","MY","MV","ML","MT","MH","MQ","MR","MU","YT","MX","FM","MD","MC","MN","ME","MS","MA","MZ","MM","NA","NR","NP","NL","NC","NZ","NI","NE","NG","NU","NF","MP","NO","OM","PK","PW","PS","PA","PG","PY","PE","PH","PN","PL","PT","PR","QA","RO","RU","RW","RE","BL","SH","KN","LC","MF","PM","VC","WS","SM","ST","SA","SN","RS","SC","SL","SG", |
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function maxSubarray(arr, k) { | |
if (arr.length < k) return 0 | |
let currSubSum = arr.slice(0, k).reduce((a, b) => a + b); | |
let sum = currSubSum; | |
for (let i = k; i < arr.length; i++) { | |
currSubSum = currSubSum + arr[i] - arr[i - k] | |
sum = Math.max(sum, currSubSum) | |
} | |
return sum | |
} |
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function getMaxProfit(array) { | |
let profit = 0; | |
for (let i = 0; i < array.length; i++) { | |
let max = array[i] | |
for (let j = i + 1; j < array.length; j++) { | |
if (max < array[j]) max = array[j] | |
} | |
profit += max - array[i] | |
} | |
return profit |
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function validIp(ip) { | |
const ipArray = ip.split(".") | |
console.log(ipArray.length) | |
return ipArray.length === 4 && !ipArray.some(address => 0 > Number(address) || Number(address) > 255) | |
} | |
console.log(validIp('1.2.3.4')) | |
console.log(validIp('123.45.67.89')) | |
console.log(validIp('1.2.3.4.5')) | |
console.log(validIp('1.2.3')) |