<awangdev>121. Best Time to Buy and Sell Stock_2.java
public int maxProfit(int[] prices) {
        if (prices == null || prices.length <= 1) return 0;
        int profit = 0, min = prices[0];
        for (int i = 1; i < prices.length; i++) {
            if (prices[i] < min) min = prices[i];
            else profit = Math.max(profit, prices[i] - min);
        }
        return profit;
    }
public int sample_funcname ( int [ ] var_0 ) {
  if ( var_0 == null || var_0 . length <= 1 ) return 0 ;
  int var_5 = 0 , var_6 = var_0 [ 0 ] ;
  for ( int var_7 = 1 ;
  var_7 < var_0 . length ;
  var_7 ++ ) {
    if ( var_0 [ var_7 ] < var_6 ) var_6 = var_0 [ var_7 ] ;
    else var_5 = Math . max ( var_5 , var_0 [ var_7 ] - var_6 ) ;
  }
  return var_5 ;
}
