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function heightChecker(heights){  let len = heights.length;  let count = 0;   let h = [];  for(let i = 0; i < len; i++){    h[i] = heights[i]  }  heights.sort((a,b) => a-b);  for(let i = 0; i < len; i++){    if(h[i] != heights[i]){      count++;    }  }  return count;}let heights0 = [1,1,4,2,1,3]let heights1 = [5,1,2,3,4]let heights2 = [1,2,3,4,5]

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