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Update README.md
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‎06_Array/README.md‎

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@@ -137,10 +137,13 @@ arr是一个不重复数字组成的数组，在下面新增代码，
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```js
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let arr = [1,5,3,9,6,8,10,7,12] //全部是不重复的数字
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// 新增代码
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for(let num1 of arr){
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for(let num2 of arr){
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// 新增代码
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console.log(num1,num2) // num1+num2 == 18
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}
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}
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console.log(num1,num2) // num1+num2 == 18
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```
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