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mergesort.js
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mergesort.js
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const numbers = [6,5,3,1,8,7,2,9,4];
function mergeSort(array){
if(array.length === 1){
return array;
}
//Split array into right and left
let mid = array.length/2;
const left = array.slice(0,mid);
const right = array.slice(mid);
console.log('left:',left);
console.log('right',right);
return merge( mergeSort(left), mergeSort(right))
}
function merge(left, right){
const newArr = [];
let i = 0,j = 0;
while(i<left.length && j<right.length){
if(left[i]<right[j]){
newArr.push(left[i]);
i++;
} else {
newArr.push(right[j]);
j++;
}
}
//console.log(left,right);
// if(i == left.length){
// newArr.push(...right.slice(j));
// } else {
// newArr.push(...left.slice(i));
// }
// return newArr;
return newArr.concat(left.slice(i)).concat(right.slice(j));
}
const answer = mergeSort(numbers);
console.log(answer);