4 sum using hashmap: You will be given four arrays arr1, arr2, arr3, and arr4 all of length n,you have to return the count of tuples (i, j, k, l) satisfying the conditions: 0 <= i, j, k, l < n nums1[i] + nums2[j] + nums3[k] + nums4[l] == 0

4 sum using hashmap: You will be given four arrays arr1, arr2, arr3, and arr4 all of length n,you have to return the count of tuples (i, j, k, l) satisfying the conditions: 0 <= i, j, k, l < n nums1[i] + nums2[j] + nums3[k] + nums4[l] == 0

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: medium

标签: interviewbit, hashmap, topic-specific, data-structures

参考答案摘要

Approach: 2 nested loops will be required for implementing this. We will start by creating a hashmap Next, all possible sums of 2 elements will be calculated and stored in the map using the nested loo...

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