Selection Sort

#javascript #html #css #webdev

                   -Selection Sort: Introduction
                   -Selection Sort: Implementation

Selection Sort: Introduction

Selection sort is similar to bubble sort, but instead of first placing the large values into sorted positions, it places small values into sorted positions.

Selection Sort: Implementation

Selection Sort Example


function sselectionSort(arr){
    for(var i = 0; i < arr.length; i++){
        var lowest = i;
        for(var j = i+1; j < arr.length; j++){
            if(arr[j] < arr[lowest]){
                lowest = j;
            }
        }
        if(i !== lowest){
            //SWAP!
            var temp = arr[i];
            arr[i] = arr[lowest];
            arr[lowest] = temp;
        }
    }
    return arr;
}


function selectionSort(arr) {
  const swap = (arr, idx1, idx2) =>
    ([arr[idx1], arr[idx2]] = [arr[idx2], arr[idx1]]);

  for (let i = 0; i < arr.length; i++) {
    let lowest = i;
    for (let j = i + 1; j < arr.length; j++) {
      if (arr[lowest] > arr[j]) {
        lowest = j;
      }
    }
    if (i !== lowest) swap(arr, i, lowest);
  }

  return arr;
}

selectionSort([0,2,34,22,10,19,17]);