LeetCode/TypeScript/169.ts

// 169. Majority Element

function majorityElement(nums: number[]): number {
    var ns: number = nums.length;
    var ns_half: number = ns / 2;

    nums.sort((a, b) => a - b);

    var count: number = 0;
    var ln: number = nums[0];
    for ( var i = 0; i < ns; ++i ) {
        if ( ln != nums[i] ) { count = 0; }
        ln = nums[i];
        ++count;
        if ( count > ns_half ) { return ln; }
    }
    return -1;
};

function main() {
    function r(n: number[], exp: number) {
        console.log(`majorityElement(${n}) = ${majorityElement(n)} | exp: ${exp}`)
    }

    r([3,2,3], 3)
    r([2,2,1,1,1,2,2], 2)
}

main()