- "function factorialize(num) {\n return num === 1 ? 1 : num * factorialize(num-1);\n}\n\nfactorialize(5);\n"
+ "function factorialize(num) {\n return num < 1 ? 1 : num * factorialize(num-1);\n}\n\nfactorialize(5);\n"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -169,7 +169,6 @@
"String.toLowerCase()"
"String.toLowerCase()"
],
],
"solutions": [
"solutions": [
- "function palindrome(str) {\n var a = str.toLowerCase().replace(/[^a-z]/g, '');\n console.log(a.split('').reverse().join(''));\n return a == a.split('').reverse().join('');\n}\n\n\n\npalindrome(\"eye\");\npalindrome(\"A man, a plan, a canal. Panama\");\n"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -417,7 +416,6 @@
"String.slice()"
"String.slice()"
],
],
"solutions": [
"solutions": [
- "function truncate(str, num) {\n if (str.length > num) {\n return str.substring(0, num-3) + '...';\n }\n return str;\n}\n\ntruncate('A-tisket a-tasket A green and yellow basket', 11);\n"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -663,9 +661,7 @@
"MDNlinks": [
"MDNlinks": [
"Array.sort()"
"Array.sort()"
],
],
- "solutions": [
+ "solutions": [],
- "function where(arr, num) {\n // Find my place in this sorted array.\n return num;\n}\n\nwhere([40, 60], 50);\n"
- "function sumAll(arr) {\n var sum = 0;\n arr.sort(function(a,b) {return a-b;});\n for (var i = arr[0]; i <= arr[1]; i++) {\n sum += i; \n }\n return sum;\n}\n\nsumAll([1, 4]);\n"
+ "function sumAll(arr) {\n var sum = 0;\n arr.sort(function(a,b) {return a-b;});\n for (var i = arr[0]; i <= arr[1]; i++) {\n sum += i; \n }\n return sum;\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -80,7 +80,7 @@
"Array.concat()"
"Array.concat()"
],
],
"solutions": [
"solutions": [
- "function diff(arr1, arr2) {\n var newArr = [];\n var h1 = Object.create(null);\n arr1.forEach(function(e) {\n h1[e] = e;\n });\n\n var h2 = Object.create(null);\n arr2.forEach(function(e) {\n h2[e] = e;\n });\n\n Object.keys(h1).forEach(function(e) {\n if (!(e in h2)) newArr.push(h1[e]);\n });\n Object.keys(h2).forEach(function(e) {\n if (!(e in h1)) newArr.push(h2[e]);\n });\n // Same, same; but different.\n return newArr;\n}\n\ndiff([1, 2, 3, 5], [1, 2, 3, 4, 5]);\n"
+ "function diff(arr1, arr2) {\n var newArr = [];\n var h1 = Object.create(null);\n arr1.forEach(function(e) {\n h1[e] = e;\n });\n\n var h2 = Object.create(null);\n arr2.forEach(function(e) {\n h2[e] = e;\n });\n\n Object.keys(h1).forEach(function(e) {\n if (!(e in h2)) newArr.push(h1[e]);\n });\n Object.keys(h2).forEach(function(e) {\n if (!(e in h1)) newArr.push(h2[e]);\n });\n // Same, same; but different.\n return newArr;\n}"
- "function fearNotLetter(str) {\n var s = str.split('').map(function(c) {return c.charCodeAt(0);});\n for (var i = 1; i < s.length; i++) {\n if (s[i]-1 != s[i-1]) {\n return String.fromCharCode(s[i]-1);\n }\n }\n}\n\nfearNotLetter('abce');\n"
+ "function fearNotLetter(str) {\n var s = str.split('').map(function(c) {return c.charCodeAt(0);});\n for (var i = 1; i < s.length; i++) {\n if (s[i]-1 != s[i-1]) {\n return String.fromCharCode(s[i]-1);\n }\n }\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -402,7 +402,7 @@
"Boolean Objects"
"Boolean Objects"
],
],
"solutions": [
"solutions": [
- "function boo(bool) {\n // What is the new fad diet for ghost developers? The Boolean.\n return typeof(bool) === \"boolean\";\n}\n\nboo(null);\n"
+ "function boo(bool) {\n // What is the new fad diet for ghost developers? The Boolean.\n return typeof(bool) === \"boolean\";\n}\n\nboo(null);"
- "function spinalCase(str) {\n // \"It's such a fine line between stupid, and clever.\"\n // --David St. Hubbins\n str = str.replace(/([a-z](?=[A-Z]))/g, '$1 ');\n return str.toLowerCase().replace(/\\ |\\_/g, '-');\n}\n\nspinalCase('This Is Spinal Tap');\n"
+ "function spinalCase(str) {\n // \"It's such a fine line between stupid, and clever.\"\n // --David St. Hubbins\n str = str.replace(/([a-z](?=[A-Z]))/g, '$1 ');\n return str.toLowerCase().replace(/\\ |\\_/g, '-');\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -574,7 +574,7 @@
"Remainder"
"Remainder"
],
],
"solutions": [
"solutions": [
- "function sumFibs(num) {\n var a = 1; \n var b = 1;\n var s = 0;\n while (a <= num) {\n if (a % 2 !== 0) { \n s += a; \n }\n a = [b, b=b+a][0];\n }\n return s;\n}\n\nsumFibs(4);\n"
+ "function sumFibs(num) {\n var a = 1; \n var b = 1;\n var s = 0;\n while (a <= num) {\n if (a % 2 !== 0) { \n s += a; \n }\n a = [b, b=b+a][0];\n }\n return s;\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -615,7 +615,7 @@
"Array.push()"
"Array.push()"
],
],
"solutions": [
"solutions": [
- "function eratosthenesArray(n) {\n var primes = [];\n if (n > 2) {\n var half = n>>1;\n var sieve = Array(half);\n for (var i = 1, limit = Math.sqrt(n)>>1; i <= limit; i++) {\n if (!sieve[i]) {\n for (var step = 2*i+1, j = (step*step)>>1; j < half; j+=step) {\n sieve[j] = true;\n }\n }\n }\n primes.push(2);\n for (var p = 1; p < half; p++) {\n if (!sieve[p]) primes.push(2*p+1);\n }\n }\n return primes;\n}\n\nfunction sumPrimes(num) {\n return eratosthenesArray(num+1).reduce(function(a,b) {return a+b;}, 0);\n}\n\nsumPrimes(10);\n"
+ "function eratosthenesArray(n) {\n var primes = [];\n if (n > 2) {\n var half = n>>1;\n var sieve = Array(half);\n for (var i = 1, limit = Math.sqrt(n)>>1; i <= limit; i++) {\n if (!sieve[i]) {\n for (var step = 2*i+1, j = (step*step)>>1; j < half; j+=step) {\n sieve[j] = true;\n }\n }\n }\n primes.push(2);\n for (var p = 1; p < half; p++) {\n if (!sieve[p]) primes.push(2*p+1);\n }\n }\n return primes;\n}\n\nfunction sumPrimes(num) {\n return eratosthenesArray(num+1).reduce(function(a,b) {return a+b;}, 0);\n}\n\nsumPrimes(10);"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -657,7 +657,7 @@
"Smallest Common Multiple"
"Smallest Common Multiple"
],
],
"solutions": [
"solutions": [
- "function gcd(a, b) {\n while (b !== 0) {\n a = [b, b = a % b][0];\n }\n return a;\n}\n\nfunction lcm(a, b) {\n return (a * b) / gcd(a, b);\n}\n\nfunction smallestCommons(arr) {\n arr.sort(function(a,b) {return a-b;});\n var rng = [];\n for (var i = arr[0]; i <= arr[1]; i++) {\n rng.push(i);\n }\n return rng.reduce(lcm);\n}\n\n\nsmallestCommons([1,5]);\n"
+ "function gcd(a, b) {\n while (b !== 0) {\n a = [b, b = a % b][0];\n }\n return a;\n}\n\nfunction lcm(a, b) {\n return (a * b) / gcd(a, b);\n}\n\nfunction smallestCommons(arr) {\n arr.sort(function(a,b) {return a-b;});\n var rng = [];\n for (var i = arr[0]; i <= arr[1]; i++) {\n rng.push(i);\n }\n return rng.reduce(lcm);\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -695,7 +695,7 @@
"Array.filter()"
"Array.filter()"
],
],
"solutions": [
"solutions": [
- "function find(arr, func) {\n var num;\n arr.some(function(e) {\n if (func(e)) {\n num = e;\n return true;\n }\n });\n return num;\n}\n\nfind([1, 2, 3, 4], function(num){ return num % 2 === 0; });\n"
+ "function find(arr, func) {\n var num;\n arr.some(function(e) {\n if (func(e)) {\n num = e;\n return true;\n }\n });\n return num;\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -736,7 +736,7 @@
"Array.shift()"
"Array.shift()"
],
],
"solutions": [
"solutions": [
- "(function drop(arr, func) {\n // Drop them elements.\n while (arr.length && !func(arr[0])) {\n arr.shift();\n }\n return arr;\n}\n\ndrop([1, 2, 3], function(n) {return n < 3; });\n)"
+ "function drop(arr, func) {\n // Drop them elements.\n while (arr.length && !func(arr[0])) {\n arr.shift();\n }\n return arr;\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -776,7 +776,7 @@
"Array.isArray()"
"Array.isArray()"
],
],
"solutions": [
"solutions": [
- "function steamroller(arr) {\n if (!Array.isArray(arr)) {\n return [arr];\n }\n var out = [];\n arr.forEach(function(e) {\n steamroller(e).forEach(function(v) {\n out.push(v);\n });\n });\n return out;\n}\n\nsteamroller([1, [2], [3, [[4]]]]);\n"
+ "function steamroller(arr) {\n if (!Array.isArray(arr)) {\n return [arr];\n }\n var out = [];\n arr.forEach(function(e) {\n steamroller(e).forEach(function(v) {\n out.push(v);\n });\n });\n return out;\n}"
- "function every(collection, pre) {\n // Does everyone have one of these?\n return collection.every(function(e) { return e[pre]; });\n}\n\nevery([{'user': 'Tinky-Winky', 'sex': 'male'}, {'user': 'Dipsy', 'sex': 'male'}, {'user': 'Laa-Laa', 'sex': 'female'}, {'user': 'Po', 'sex': 'female'}], 'sex');\n"
+ "function every(collection, pre) {\n // Does everyone have one of these?\n return collection.every(function(e) { return e[pre]; });\n}"
],
],
"type": "bonfire",
"type": "bonfire",
"challengeType": 5,
"challengeType": 5,
@@ -904,8 +904,7 @@
"Arguments object"
"Arguments object"
],
],
"solutions": [
"solutions": [
- "function add() {\n if (arguments.length == 1) {\n var a = arguments[0];\n if (!isNumber(a)) return;\n return function(b) {\n if (!isNumber(b)) return;\n return a+b;\n };\n }\n if (![].slice.call(arguments).every(isNumber)) return;\n return arguments[0] + arguments[1];\n}\n\nfunction isNumber(obj) {\n return toString.call(obj) == '[object Number]';\n}\n\nadd(2,3);\n",
+ "function add() {\n var a = arguments[0];\n if (toString.call(a) !== '[object Number]') return; \n if (arguments.length === 1) {\n return function(b) {\n if (toString.call(b) !== '[object Number]') return;\n return a + b;\n };\n }\n var b = arguments[1];\n if (toString.call(b) !== '[object Number]') return; \n return a + arguments[1];\n}"
- "function add() {\n var a = arguments[0];\n if (toString.call(a) !== '[object Number]') return; \n if (arguments.length === 1) {\n return function(b) {\n if (toString.call(b) !== '[object Number]') return;\n return a + b;\n };\n }\n var b = arguments[1];\n if (toString.call(b) !== '[object Number]') return; \n return a + arguments[1];\n}\n\nadd(2,3);\n"
BerkeleyTrue
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921080f