# JUNTO Practice: Eloquent JavaScript, Chapter 3

Discussed on December 03, 2019.

Eloquent Javascript

Chapter 3 exercises:

• Minimum
• Recursion
• Bean Counting

## Solutions

Click to see:

### Oscar Martinez

Minimum

``````min = (a,b) => {
return a < b ? a:b;
}
``````

Recursion

``````isEven = (n) => {
n = n < 0 ? -n : n;
if (n > 1){
return isEven(n-2);
} else if (n===0){
return true;
} else if (n===1){
return false;
}
}
``````

Bean Counting

``````countChar = (targetString, char) => {
charCount = 0;
for (var i = 0; i < targetString.length; i++){
if (targetString[i]===char){
charCount++;
}
}
return charCount;
}

countBs = (targetString) => {
return countChar(targetString,"B");
}
``````

### John Lekberg

Minimum

``````const min = (x, y) => x < y ? x : y;
``````

Recursion

``````const isEven = n => {
if (n < 0) return isEven(-n);

if (n === 0) return true;
if (n === 1) return false;

return isEven(n - 2);
};
``````

Bean Counting

``````const countChar = (s, c) => {
let count = 0;
for (let x of s) {
if (x === c) {
count++;
}
}
return count;
};

const countBs = s => countChar(s, "B");
``````

### Daniel Bassett

Minimum

``````var min = function(x, y) {
return (x <= y) ? x : y;
};

``````

Recursion

``````var isEven = function(num) {
num = Math.abs(num);
if (num === 0)
return true;
else if (num === 1)
return false;
else
return isEven(num - 2);
};
``````

Bean Counting

``````function countBs(str) {
return countChar(str, 'B');
}

function countChar(str, chr) {
var counter = 0
for (var i = 0; i < str.length; i++) {
if (str.charAt(i) === chr) {counter++;}
}
return counter;
}
``````