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codeCheck.js
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codeCheck.js
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function stringBack (s) {
var newString = '';
for (i = s.length -1; i >= 0; i--) {
newString += s.charAt(i);
}
return newString;
}
function findUnique (str) {
var unique = '';
for (var i = 0; i < str.length; i++) {
if (str.lastIndexOf(str[i]) == str.indexOf(str[i])) {
unique += str[i];
}
}
return unique;
}
function remoDups (str) {
var unique = '';
for (var i = 0; i < str.length; i++) {
if (!unique.includes(str[i])) {
unique += str[i];
}
}
return unique;
}
function firstNonRep(str) {
var length = str.length;
var char = '';
var charCount = {};
for (var i = 0; i < length; i++) {
char = str[i];
if (charCount[char]) {
charCount[char]++;
}
else
charCount[char] = 1;
}
console.log(charCount);
for (var letter in charCount) {
if (charCount[letter]==1)
return letter;
}
}
function isPrime(num) {
var divsor = 2;
while (divsor < num) {
if (num % divsor) {
return false;
} else {
divsor++;
}
}
return true;
}
function isPal(str) {
var len = str.length
for (var i = 0; i <= len/2; i++) {
if (str[i] != str[len-1-i]) {
return false;
}
}
return false;
}
function ctZero(num) {
var zeros = 0;
while (num > 0) {
zeros += Math.floor(num/10);
num = num/10
}
return zeros;
}
console.log("i'm a lasagna hog".split("").reverse().join(""));