Create (多维)数组的最大值最小值.js

Rain120 · Aug 9, 2018 · 58f2215 · 58f2215
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commit 58f2215
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/(多维)数组的最大值最小值.js b/(多维)数组的最大值最小值.js
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+/*
+ * question：一维数组，多维数组找出某列的最大值、最小值
+ * answer：我的思路是扁平化，在通过一维数组查找结果
+ */
+
+var flattenArr = (arr, index) => {
+  let fa = [];
+  arr.map(item => fa.push(item[index]));
+  return fa;
+}
+var min = Math.min.apply(null, flattenArr([[5, 6, 4], [1, 2, 6], [3, 4, 8]], 2));
+var max = Math.max.apply(null, flattenArr([[5, 6, 4], [1, 2, 6], [3, 4, 8]], 2));
+console.log(max, min);