running-sum-of-1d-array_0216.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
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    <title>running-sum-of-1d-array_0216</title>
</head>
<body>
    
</body>
<script>
    const nums = [1,2,3,4];

    console.log("======result===========");
    console.log(runningSum(nums));
    console.log("=======================");

function runningSum (nums) {
    let result = [];
    let currentSum = 0;
    
    nums.forEach((num) => {
        currentSum += num;
        result.push(currentSum);
    })

    return result
};

```
function runningSum (nums) {
    let newNums = [];
    let result = [];
        nums.forEach((num, index)=>{
            if(index === 0) {
                newNums.push(num);
                result.push(num);
                return
            }
            newNums[index] = num;
            let sum = eval(newNums.join("+"));
            result[index] = sum;
        })
    return result
};
```
</script>
</html>