I need to write some kind of loop that can count the frequency of each letter in a string.
For example: "aabsssd"
output: a:2, b:1, s:3, d:1
Also want to map same character as property name in object. Any good idea how to do this?
I am not sure how to do it.
This is where I am so far:
var arr = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];
function counter(x) {
var count = 0,
temp = [];
x = x.split('');
console.log(x);
for (var i = 0, len = x.length; i < len; i++) {
if (x[i] == "a") {
count++;
}
}
return count;
}
var a = "aabbddd";
console.log(counter(a));
const str = 'This string will be used to calculate frequency distribution'; We need to return an object that represents the frequency distribution of various elements present in the array.
Example: Find Frequency of Character We loop through each character in the string using charAt() function which takes the index ( i ) and returns the character in the given index. We compare each character to the given character ch . If it's a match, we increase the value of frequency by 1.
Here you go:
function getFrequency(string) {
var freq = {};
for (var i=0; i<string.length;i++) {
var character = string.charAt(i);
if (freq[character]) {
freq[character]++;
} else {
freq[character] = 1;
}
}
return freq;
};
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