Practice Add Two Promises
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Add Two Promises
Implement addTwoPromises(promise1, promise2). Each input promise resolves to a number; the function must return a promise whose resolved value is their sum. The two completion times may differ, and elapsed time is not the judged result. Practice approach: Await Promise.all([promise1, promise2]), then add the resulting values. This keeps the return value asynchronous and handles either resolution order. Do not add the Promise objects themselves or use their completion order as operand order. Only two result values are stored.
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Problem Statement
Implement addTwoPromises(promise1, promise2). Each input promise resolves to a number; the function must return a promise whose resolved value is their sum. The two completion times may differ, and elapsed time is not the judged result. Practice approach: Await Promise.all([promise1, promise2]), then add the resulting values. This keeps the return value asynchronous and handles either resolution order. Do not add the Promise objects themselves or use their completion order as operand order. Only two result values are stored.
Source: Add Two Promises on LeetCode. Use the original task for its coding environment and submissions.
Add Two Promises
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Examples
# Example 1
promise1 = new Promise(resolve => setTimeout(() => resolve(2), 20)), promise2 = new Promise(resolve => setTimeout(() => resolve(5), 60))
7
# Example 2
promise1 = new Promise(resolve => setTimeout(() => resolve(10), 50)), promise2 = new Promise(resolve => setTimeout(() => resolve(-12), 30))
-2
Constraints
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