just do it

20220421, 3min

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```javascript /**

• @param {number[]} prices
• @return {number} */ // 13:23 -> 13:26 // 贪心：左取最小，右取最大 var maxProfit = function(prices) { let low = Number.MAX_VALUE; let profit = 0; for (let price of prices) { low = Math.min(low, price); profit = Math.max(profit, price - low) } return profit }; ``` | | —- |

20220420, 4min

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```javascript // 08:49 -> 08:53 // 贪心，左取最小值，右取最大值 var maxProfit = function(prices) { let low = Number.MAX_VALUE; let result = 0; for (let i = 0; i < prices.length; i++) { low = Math.min(low, prices[i]); result = Math.max(result, prices[i] - low) } return result; };

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## 20220419， 2min
| <br />```javascript
 // 13:45 -> 13:47
 // 
var maxProfit = function(prices) {
  let low = Number.MAX_VALUE;
  let result = 0;
  for (let i = 0; i < prices.length; i++) {
    low = Math.min(low, prices[i]);
    result = Math.max(result, prices[i] - low);
  }
  return result;
};

| | —- |