@mcuringa/

# Array-Examples

## #thinkjs #arrays #examples #videos

main.js
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```
```// Example 1: oddCount
// Write a function to count how many odd
// numbers are in an array.

function oddCount(numbers) {
let counter = 0;

for (let i = 0; i < numbers.length; i++) {
if (numbers[i] % 2 !== 0) {
counter++;
}
}
return counter;
}

// Example 2: sumEvens
// Sum up all the even numbers in an array.

function sumEvens(numbers) {

let total = 0;
for (let i = 0; i < numbers.length; i++) {
if (numbers[i] % 2 === 0) {
total += numbers[i];
}
}

}

// Example 3: findNegatives
// Return an array with all of the negative numbers
// in an array. Do not modify the original array
// (i.e. write a pure function).
function findNegatives(numbers) {

let negatives = [];
for (let i = 0; i < numbers.length; i++) {
if (numbers[i] < - 0) {
negatives.push(numbers[i]);
}
}

return negatives;
}

// Example 4: sumUpToEven
// Sum all the elements in an array up to but
// not including the first even number.
function sumUpToEven(numbers) {

let total = 0;
for (let i = 0; i < numbers.length; i++) {
if (numbers[i] % 2 === 0) {
}
total += numbers[i];
}

}

// Example 5: olympicScores

// Write a function that takes an array of numbers and
// returns the an array of numbers with the highest and
// lowest scores removed. Do not modify the original
// array parameter.

function olympicScores(scores) {

let low = 11;
let high = 0;
let lowIx = 0;
let highIx = 0;

for (let i = 0; i < scores.length; i++) {
let score = scores[i];
if(score > high) {
high = score;
highIx = i;
}
if(score < low) {
low = score;
lowIx = i;
}
}
let ss = scores.slice();
ss.splice(lowIx, 1);
ss.splice(highIx, 1);

return ss;
}

let scores = [10, 8, 8, 9, 5, 10];
let modScores = olympicScores(scores); //=>[8, 8, 9, 10]
console.log("Original scores:", scores);
console.log("Modified scores:", modScores);```
Babel Compiler v6.4.4 Copyright (c) 2014-2015 Sebastian McKenzie