JAVASCRIPT
JavaScript flatten an array
let arr = [
[1, 2],
[3, 4],
[5, 6][7, 8, 9],
[10, 11, 12, 13, 14, 15]
];
let flatArray = arr.reduce((acc, curVal) => {
return acc.concat(curVal)
}, []);
//Output: [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 ]
javascript array flat
var arr1 = [1, 2, [3, 4]];
arr1.flat();
// [1, 2, 3, 4]
var arr2 = [1, 2, [3, 4, [5, 6]]];
arr2.flat();
// [1, 2, 3, 4, [5, 6]]
var arr3 = [1, 2, [3, 4, [5, 6]]];
arr3.flat(2);
// [1, 2, 3, 4, 5, 6]
flatten an array javascript
var arrays = [
["$6"],
["$12"],
["$25"],
["$25"],
["$18"],
["$22"],
["$10"]
];
var merged = [].concat.apply([], arrays);
console.log(merged);
flatten array
a = np.array([[1,2], [3,4]])
>>> a.flatten()
array([1, 2, 3, 4])
>>> a.flatten('F')
array([1, 3, 2, 4])
array.flat
const arrays = [
["$6"],
["$12"],
["$25"],
["$25"],
["$18"],
["$22"],
["$10"]
];
const merge3 = arrays.flat(1); //The depth level specifying how deep a nested array structure should be flattened. Defaults to 1.
console.log(merge3);
array flat
let arr = [1,2,3,[4],5,6,[7]]
let asn =arr.flat()
let aa = arr.reduce((t,c,i,a)=>{
return t.concat(c)
},[])
console.log(aa)
javascript array flatten
const flatten = (ary) => ary.reduce((a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), [])
function for flatten an array
const arr = [1, 2, [3, 4, [5, 6]]];
// to enable deep level flatten use recursion with reduce and concat
function flatDeep(arr, d = 1) {
return d > 0 ? arr.reduce((acc, val) => acc.concat(Array.isArray(val) ? flatDeep(val, d - 1) : val), [])
: arr.slice();
};
flatDeep(arr, Infinity);
// [1, 2, 3, 4, 5, 6]
// Faltten an array
const age=[1,2,
[12,23,[75,34,[2,34]],[32,45]],
[3,456],
[56,5]]
// to store resultant array
let result=[]
function flattenArray(inputArray)
{
inputArray.map((value)=>{
if(Array.isArray(value))
{
flattenArray(value)
}
else{
result.push(value)
}})
}
// calling function to fallten an array
flattenArray(age);
array flatten
const arr = [1, 2, [3, 4]];
// To flat single level array
arr.flat();
// is equivalent to
arr.reduce((acc, val) => acc.concat(val), []);
// [1, 2, 3, 4]
// or with decomposition syntax
const flattened = arr => [].concat(...arr);
array.flat
var arr1 = [1, 2, [3, 4]];
arr1.flat();
// [1, 2, 3, 4]
var arr2 = [1, 2, [3, 4, [5, 6]]];
arr2.flat();
// [1, 2, 3, 4, [5, 6]]
var arr3 = [1, 2, [3, 4, [5, 6]]];
arr3.flat(2);
// [1, 2, 3, 4, 5, 6]
flatten array
function flatten(arr) {
return arr.reduce(function (flat, toFlatten) {
return flat.concat(Array.isArray(toFlatten) ? flatten(toFlatten) : toFlatten);
}, []);
}